Immutability means that God is not subject to change, that He is invariable. In His nature and character, God is absolutely without change. As Kuiper said "To deny the immutability of God is to deny that He is God."

Still restless nature dies and grows,
From change to change the creatures run:
Thy being no succession knows,
And all thy vast designs are one.
Isaac Watts

A W Tozer offers an interesting contrast...

The immutability of God appears in its most perfect beauty when viewed against the mutability of men. In God no change is possible; in men change is impossible to escape.

Frail as summer’s flower we flourish,
Blows the wind and it is gone;
But while mortals rise and perish
Our God lives unchanging on,
Praise Him, Praise Him, Hallelujah
Praise the High Eternal One!
(Play)

A. W. Pink reminds us that...

God cannot change for the better, for He is perfect; and being perfect, He cannot change for the worse

Dr S Lewis Johnson in his lecture series explains that...

As omni-presence resulted from God’s immensity, because he is transcended over space, he is therefore everywhere in space, so immutability is a natural result, a natural issue of God’s eternity. Also, His eternity is a natural issue of His immutability and so these are very closely related. One of our theologians has said, “That which has no evolution and no succession is the same yesterday, today, and forever.” When the ancients wanted to illustrate immutability, they did not speak about Charlie Brown or one’s wife’s nagging, but they spoke about a cube, and they used a cube to illustrate God’s immutability, because a cube, no matter where you test it, will always be in the same posture because it is equal to itself in all its dimensions. And so they thought of a cube when they thought to illustrate immutability. Immutability. Now what does it mean in connection with God? 

God is immutable in His essence. Now since he is infinite in his being, we have spoken of this, he cannot change. He cannot be something that he was not before. If he were able to be something that he was not before, then we could not have said that he was infinite then. And so he is, since he is infinite in his being, he cannot change. He cannot increase. He cannot decrease. He cannot self-evolve. He cannot develop. God’s essence is immutable. It is unchangeable. He cannot have any new attributes which would suggest change in his essential being. He is exalted above all becoming, if he were to become something, then he would be something he was not before. And so consequently God is immutable in his essence. He is immutable in his being. When we speak about immutability we are speaking about his being. He is immutable in his being.

He is immutable in His attributes. Now if any perfection could be separated from God, he would cease to be God. If we were, for example, to think of a God from whom his goodness were taken, then of course he would not be the infinite God that he was before. He cannot be wiser than he was before, he cannot be holier than he was before, he cannot be more righteous or more merciful than he was before, he cannot be less merciful than he was before.

Unchanging is the love of God,
From age to age the same,
Displayed to all who do His will
And reverence His Name.
(Play)

If we think of an immutable God, we not only think of a person who cannot change in his essential being, but we must also think of a person who cannot change in his attributes. And so when we think of God and when we worship God and when we praise God, we do not praise him because he is a little better today than he was yesterday. He is the same in his being and he’s the same in his attributes. He has everlasting strength, he has omniscience in his wisdom, and so on at all times.

Furthermore, thirdly, His immutability means that He is immutable in His will. He is immutable in his plans and purposes. He does not, for example, purpose something today that he changes tomorrow. He does not change his mind. Furthermore, he does not have to sit and think now what shall I do? Shall I do this or shall I do that? Well I think today I’ll try this, or I think tomorrow I will try that. Because God is infinite in his wisdom, then there is no error in the conception of his plans. All of his plans are perfect, and he does not have to reason them out. He has within himself the power to know that which is the finest plan.

I often hear theologians say God could have used several different plans, but that is not true of God. There is only one plan that is his plan, because there is one plan that represents the product of his infinite wisdom. And so he is infinite in his will. Since he is infinite in power there can be no failure in the accomplishment of his plans which fall out of his will either. So he always expresses himself or to us, but he always attempts to carry out, or carries out, the perfect plan, and he always carries it out perfectly, because he is infinitely wise and infinitely powerful. So he is immutable in his will.

Fourth, He is immutable in His consciousness. Since infinite experience is a fixed quantity, then nothing is added to God’s consciousness and nothing old is taken from it. He is immutable in his consciousness.

And finally, He is unchangeable in his place. Charnock, who has written an outstanding book on the attributes of God, has said, “He cannot be changed in time because he is eternity. And he cannot be changed in place because he hath ubiquity.” That is, he is everywhere present. (For the full discussion including Mp3, Pdf or MS Word format see The Repentance and Unchangeability of God- by Dr S Lewis Johnson)

The psalmist affirms God's wonderful attribute of immutability...

Of old Thou didst found the earth; And the heavens are the work of Thy hands. 26 "Even they will perish, but Thou dost endure; And all of them will wear out like a garment; Like clothing Thou wilt change them, and they will be changed. 27 "But Thou art the same, And Thy years will not come to an end. (Ps 102:25-27)

In short, in our changing world, we can always depend on our unchanging God and thus can confidently pray...

Keep Thou my way, O Lord, be Thou ever nigh;
Strong is Thy mighty arm, weak and frail am I;
Then, my unchanging Friend, on Thee, my hopes depend,
Till life’s brief day shall end, be Thou ever nigh.
(Play)

A W Pink writes that

Immutability is one of the Divine perfections which is not sufficiently pondered. It is one of the excellencies of the Creator which distinguishes Him from all His creatures. God is perpetually the same: subject to no change in His being, attributes, or determinations. Therefore God is compared to a Rock (Dt 32:4, etc.) which remains immovable, when the entire ocean surrounding it is continually in a fluctuating state; even so, though all creatures are subject to change, God is immutable. Because God has no beginning and no ending, He can know no change. He is everlastingly “the Father of lights, with whom is no variableness, neither shadow of turning” (James 1:17).  (A. W. Pink in The attributes of God.)

Immutability of God by C. H. Spurgeon. He writes

It has been said by some one that "the proper study of mankind is man." I will not oppose the idea, but I believe it is equally true that the proper study of God's elect is God; the proper study of a Christian is the Godhead. The highest science, the loftiest speculation, the mightiest philosophy, which can ever engage the attention of a child of God, is the name, the nature, the person, the work, the doings, and the existence of the great God whom he calls his Father. There is something exceedingly improving to the mind in a contemplation of the Divinity. It is a subject so vast, that all our thoughts are lost in its immensity; so deep, that our pride is drowned in its infinity. Other subjects we can compass and grapple with; in them we feel a kind of self-content, and go our way with the thought, "Behold I am wise." But when we come to this master-science, finding that our plumb-line cannot sound its depth, and that our eagle eye cannot see its height, we turn away with the thought, that vain man would be wise, but he is like a wild ass's colt; and with the solemn exclamation, "I am but of yesterday, and know nothing." No subject of contemplation will tend more to humble the mind, than thoughts of God. We shall be obliged to feel" "Great God, how infinite art thou, what worthless worms are we!" But while the subject humbles the mind it also expands it. He who often thinks of God, will have a larger mind than the man who simply plods around this narrow globe....I dare say it does, but after all, the most excellent study for expanding the soul, is the science of Christ, and him crucified, and the knowledge of the Godhead in the glorious Trinity. Nothing will so enlarge the intellect, nothing so magnify the whole soul of man, as a devout, earnest, continued investigation of the great subject of the Deity. (Immutability of God)

Immutability

is that perfection of God by which He is devoid of all change, not only in His Being, but also in His perfections, and in His purposes and promises … and is free from all accession or diminution and from all growth or decay in His Being or perfection. (Louis Berkhof)

All God’s attributes or perfections are included in His immutability. There can be no increase nor decrease in their number, capacity, or power. God could not be more or less holy, righteous, omnipotent, etc. It would be an absurdity to suppose He could. Immutability, however, is not immobility. It does not mean that God cannot change His actions, or way of dealing with men in different situations and times. It simply means His character and attributes do not change. It means that His eternal purposes does not change, for He has even purposed all things that come to pass. Reason teaches immutability. God must be immutable; there can be no change in Him, either for better or worse, since God is infinite and absolute perfection. If God could change for the better or the worse, it would indicate a weakness in His Being. There can be no cause for change in God who is perfect.

The immutability of God raises an important question. If God is immutable, what is meant by such statements found in the Bible that speak of God repenting or changing His mind?

Jonah 3:10 And God repented of the evil that he had said that he would do unto them? (KJV) (For comments on Jonah 3:10 related to Mal 3:6 see The Repentance and Unchangeability of God- by Dr S Lewis Johnson)

Ge 6:5-6 And GOD saw that the wickedness of man was great in the earth, and that every imagination of the thoughts of his heart was only evil continually. 6 And it repented the LORD that he had made man on the earth, and it grieved him at his heart. (KJV)

These passages are not suggesting there was a change in the character of God, only in His actions toward man based on the actions of men. It is man who changes and due to the changeless character of God, He must change His actions or dealings with man. God must deal with men in accord with His holy character. He must eventually deal with sin in judgment as He did in Genesis 6, or He acts in mercy when men repent as He did with Nineveh. But God’s actions are always consistent with His character. For instance, the Genesis passage does not say that God changed His mind in the sense that He wished He had not made man, but only that He was grieved over man’s behavior. The translation of the NIV makes the point clear.

Genesis 6:5-6 The LORD saw how great man’s wickedness on the earth had become, and that every inclination of the thoughts of his heart was only evil all the time.6 The LORD was grieved that he had made man on the earth, and his heart was filled with pain. (NIV)

Compare also the translation of the NIV for Jonah 3:10: When God saw what they did and how they turned from their evil ways, he had compassion and did not bring upon them the destruction he had threatened. (NIV)

When used of God as in some translations, the term “repentance” is simply an anthropomorphism, a term ascribing human feeling or emotion to God to show us God’s attitude toward sin.

The immutability of God is a terror to the wicked because it means that God must always deal with men in accord with His holy character and plan. God make no deals and accepts no man’s person apart from His plan of salvation in the person and work of Christ. On the other hand, God’s immutability is a constant comfort to believers because it means God is faithful, always, to His promises and the principles of His Word. For this reason, God is called “the Rock” (Deut 32:4) for when the entire world around us seems to fluctuate and shake (especially if one lives in California) God is the one safe and faithful place of anchorage.

Deuteronomy 32:4 The Rock! His work is perfect, For all His ways are just; A God of faithfulness and without injustice, Righteous and upright is He. (See related resource - Click for Scripture chain on Christ, the Rock, the Stone -- would make a great Sunday School series)

Psalm 18:2, 31 The LORD is my rock and my fortress and my deliverer, My God, my rock, in whom I take refuge; My shield and the horn of my salvation, my stronghold. 31 For who is God, but the LORD? And who is a rock, except our God  (See Spurgeon Commentary on 18:2, on 18:31)

People will often let each other down. Our friends as well as we ourselves often prove fickle, but the Lord who never changes, never lets us down. He is our Rock of blessing, support, and deliverance. This is why our trust should never be in man as Jer 17:5 warns, “Cursed be man that trust in mankind and makes flesh his strength.” This does not mean that God always answers our prayers and desires according to our wishes for He does not. It means, however, we can count on the fact that He is faithful to always act in accordance with His wisdom, love, and purposes. Let’s note some of the ways that God is faithful: (See also God's Attribute Faithfulness)

He is faithful to forgive sin when we confess it (1John 1:9).

He is faithful to discipline us in love when we need it (He 12:5-note; Ps 11:5- Spurgeon Commentary).

He is faithful to support us in our suffering as the faithful Creator (see note 1 Peter 4:19).

He is faithful to keep His promises according to the principles of His Word (Ps 119:86-Spurgeon's note, Ps 119:138-Spurgeon's note; Deut 7:9; Isa. 49:7; 55:3; 1Co 1:8,9)

He is faithful to strengthen us in the midst of testing or temptation (1Co 10:13-see commentary). (Oswald Chambers on "Temptation")

It is out of His faithful that He answers our prayers (Ps 143:1) (Spurgeon Commentary on Ps 143:1)

We close this attribute with these verses:

Lamentations 3:21-23 This I recall to my mind, Therefore I have hope. 22 The LORD’s lovingkindnesses indeed never cease, For His compassions never fail. 23 They are new every morning; Great is Thy faithfulness.
 

Psalm 36:5 Thy lovingkindness, O LORD, extends to the heavens, Thy faithfulness reaches to the skies  (Spurgeon Commentary on 36:)

(Source: For full discussion see: What God Is Like by Hampton Keathley III Well done summary the character of God, including His attributes).

Malachi 3:6: The Unchanging Lord
Sermon by Alexander Maclaren

‘I am the Lord, I change not; therefore ye sons of Jacob are not consumed.’— MALACHI 3:6

The scriptural revelations of the divine Name are always the basis of intensely practical admonition. The Bible does not think it worth while to proclaim the Name of God without building on the proclamation promises or commandments. There is no ‘mere theology’ in Scripture; and it does not speak of ‘attributes,’ nor give dry abstractions of infinitude, eternity, omniscience, unchangeableness, but lays stress on the personality of God, which is so apt to escape us in these abstract conceptions, and thus teaches us to think of this personal God our Father, as infinite, eternal, knowing all things, and never changing. There is all the difference in our attitude towards the very same truth if we think of the unchangeableness of God, or if we think that our Father God is unchangeable. In our text the thought of Him as unchanging comes into view as the foundation of the continuance of the unfaithful sons of Jacob in their privileges and in their very lives. ‘I am the Lord,’ Jehovah, the Self-existent, the Eternal whose being is not under the limitations of succession and time. ‘Because I am Jehovah, I change not’; and because Jehovah changes not, therefore our finite and mortal selves abide, and our infinite and sinful selves are still the objects of His steadfast love.

Let us consider, first, the unchangeable God, and second, the unchanging God as the foundation of our changeful lives.

I. The unchangeable God.

In the great covenant-name Jehovah there is revealed an existence which reverses all that we know of finite and progressive being, or finite and mortal being, or finite and variable nature. With us there are mutations arising from physical nature. The material must needs be subject to laws of growth and decadence. Our spiritual nature is subject to changes arising from the advancement in knowledge. Our moral nature is subject to fluctuations; circumstances play upon us, and ‘nothing continueth in one stay.’ Change is the condition of life. It means growth and happiness; it belongs to the perfection of creatures. But the unchangeableness of God is the negation of all imperfection, it is the negation of all dependence on circumstances, it is the negation of all possibility of decay or exhaustion, it is the negation of all caprice. It is the assurance that His is an underived, self-dependent being, and that with Him is the fountain of light; it is the assurance that, raised above the limits of time and the succession of events, He is in the eternal present, where all things that were and are, and are to come, stand naked and open. It is the assurance that the calm might of His eternal will acts, not in spasms of successive volitions preceded by a period of indecision and equilibrium between contending motives, but is one continuous uniform energy, never beginning, never bending, never ending; that the purpose of His will is ‘the eternal purpose which He hath purposed in Himself.’ It is the assurance that the clear vision of His infinite knowledge, from the heat of which nothing is hid, has no stages of advancement, and no events lying nebulous in a dim horizon by reason of distance, or growing in clearness as they draw nearer, but which pierces the mists of futurity and the veils of the past and the infinities of the present, and ‘from the beginning to the end knoweth all things.’ It is the assurance that the mighty stream of love from the heart of God is not contingent on the variations of our character and the fluctuations of our poor hearts, but rises from His deep well, and flows on for ever, ‘the river of God’ which ‘is full of water.’ It is the assurance that round all the majesty and the mercy which He has revealed for our adoration and our trust there is the consecration of permanence, that we might have a rock on which to build and never be confounded. Is there anywhere in the past an act of His power, a word of His lip, a revelation of His heart which has been a strength or a joy or a light to any man? It is valid for me, and is intended for my use. ‘He fainteth not, nor is weary.’ The bush burns and is not consumed. ‘I will not alter the thing that has gone out of my lips.’ ‘By two immutable things in which it is impossible for God to lie, we have strong consolation.’

II. The unchanging God as the foundation of our changeful lives.

In the most literal sense our text is true. Because He lives we live also. He is the same for ever, therefore we are not consumed. The foundation of our being lies beyond and beneath all the mutable things from which we are tempted to believe that we draw our lives, and is in God. The true lesson to be drawn from the mutable phenomena of earth is—heaven. The many links in the chain must have a staple. Reason requires that behind all the fleeting shall be the permanent. There must be a basis which does not partake of change. The lesson from all the mutable creation is the immutable God.

Since God changes not, the life of our spirits is not at the mercy of changing events. We look back on a lifetime of changing scenes through which we have passed, and forward to a similar succession, and this mutability is sad to many of us, and in some aspects sad to all, so powerless we are to fix and arrest any of our blessings. Which we shall keep we know not; we only know that, as certainly as buds and blossoms of spring drop, and the fervid summer darkens to November fogs and December frosts, so certainly we shall have to part with much in our passage through life. But if we let God speak to us, the necessary changes that come to us will not be harmful but blessed, for the lesson that the mutability of the mutual is meant to impress upon us is, the permanency of the divine, and our dependence, not on them, but on Him. We may look upon all the world of time and chance and think that He who Himself is unchanging changeth all. The eye of the tempest is a point of rest. The point in the heavens towards which, according to some astronomers, the whole of the solar system is drifting, is a fixed point. If we depend on Him, then change is not all sad; it cannot take God away, but it may bring us nearer to Him. We cannot be desolate as long as we have Him. We know not what shall be on the morrow. Be it so; it will be God’s to-morrow. When the leaves drop we can see the rock on which the trees grow; and when changes strip the world for us of some of its waving beauty and leafy shade, we may discern more clearly the firm foundation on which our hopes rest. All else changes. Be it so; that will not kill us, nor leave us utterly forlorn as long as we hear the voice which says, ‘I am the Lord; I change not; therefore ye are not consumed.’

Malachi 3:6
The God You Can Depend On

Bruce Goettsche writes that...

In a world where consistency is a rare commodity, God is someone you can depend on. In a world where public opinion changes with the wind . . . God remains constant. Listen to a few of the verses that proclaim God's immutability:

Psalm 102:25-27 In the beginning you laid the foundations of the earth, and the heavens are the work of your hands. They will perish, but you remain; they will all wear out like a garment. Like clothing you will change them and they will be discarded. But you remain the same, and your years will never end.

Malachi 3:6,7 -“I the LORD do not change. So you, O descendants of Jacob, are not destroyed. Ever since the time of your forefathers you have turned away from my decrees and have not kept them. Return to me, and I will return to you,” says the LORD Almighty."

Hebrews 13:8 (note)  "Jesus Christ is the same yesterday and today and forever."

In James 1:16-18 (see notes )- "Don't be deceived, my dear brothers. Every good and perfect gift is from above, coming down from the Father of the heavenly lights, who does not change like shifting shadows."

In fact, the name that God gave to Moses, the name Yahweh (or Jehovah) means "I am". The point is simple: there was never a time when God was . . . or God will be. The way He is now is the way He has always been. He is perfect and complete. Nothing can be added to Him . . . because He lacks nothing...

Every one of God's attributes drives us to the point of commitment. We are reminded that our God is a great God. I hope you have seen that the immutability of God is more than an academic statistic. God's unchanging character is a truth that brings comfort, strength, stability, and a new sense of wonder. Look at our first four attributes:

Because God is omnipresent it means He is here

Because God is omniscient it means He understands what is going on in your life

Because He is omnipotent it means He can help

And because He is immutable it means this will never change

No matter where you are in the journey or what you are currently going through . . . our Lord can help you. He is the one who can make you new. He is the one who will stand with you through any situation. He is the one you can trust. And He is the one you have been looking for and dreaming of. His arms are open. Draw close so He can wrap you in His love. There is no better place in the world to be.  (Read the full sermon message on God's Immutability)

Spurgeon on (Malachi 3:6) It is well for us that, amidst all the variableness of life, there is One whom change cannot affect; One whose heart can never alter, and on whose brow mutability can make no furrows. All things else have changed-all things are changing. The sun itself grows dim with age; the world is waxing old; the folding up of the worn-out vesture has commenced; the heavens and earth must soon pass away; they shall perish, they shall wax old as doth a garment; but there is One who only hath immortality, of whose years there is no end, and in whose person there is no change. The delight which the mariner feels, when, after having been tossed about for many a day, he steps again upon the solid shore, is the satisfaction of a Christian when, amidst all the changes of this troublous life, he rests the foot of his faith upon this truth-"I am the Lord, I change not." 

The stability which the anchor gives the ship when it has at last obtained a hold-fast, is like that which the Christian's hope affords him when it fixes itself upon this glorious truth. With God "is no variableness, neither shadow of turning." What ever his attributes were of old, they are now; his power, his wisdom, his justice, his truth, are alike unchanged. He has ever been the refuge of his people, their stronghold in the day of trouble, and he is their sure Helper still. He is unchanged in his love. He has loved his people with "an everlasting love"; he loves them now as much as ever he did, and when all earthly things shall have melted in the last conflagration, his love will still wear the dew of its youth. Precious is the assurance that he changes not! The wheel of providence revolves, but its axle is eternal love.

"Death and change are busy ever,
Man decays, and ages move;
But his mercy waneth never;
God is wisdom, God is love."

><>><>><>

SCRIPTURES ON IMMUTABLE: For the greatest benefit from the following Scriptures, read the text, not passively but instead consciously and actively "interrogating" the text (interrogate with the 5W'S & H), making a list in your life journal of what the Spirit of Christ (Ro 8:9-note) teaches you (1Jn 2:27, Jn 14:26, 16:13) about God and about man. Obey any instructions or commands you encounter, as you allow the Holy Spirit to renew your mind and to "cultivate faithfulness" (NAS, Ps 37:3-see note). Then offer prayers and praise to your Father for graciously teaching you these profitable, eternal truths (cp 2Ti 3:16, 17-notes).

Nu 23:19,20; 1Sa 15:29; Job 23:13; Ps 33:11; 102:27, 119:89, 90, 91; Pr 19:21; Eccl 3:14; 7:13; Isa 31:2; 40:28; 59:1; Ho 13:14; Mal 3:6; Ro 11:29; Heb 1:12, 6:17,18; 13:8, Jas 1:17

Nu 23:19 "God is not a man, that He should lie, Nor a son of man, that He should repent; Has He said, and will He not do it? Or has He spoken, and will He not make it good? 20 "Behold, I have received a command to bless; When He has blessed, then I cannot revoke it.

1Sa 15:29 "And also the Glory of Israel will not lie or change His mind; for He is not a man that He should change His mind."

Through every age, eternal God,
Thou art our rest, our safe abode;
High was Thy throne ere Heav’n was made,
Or earth Thy humble footstool laid.
Isaac Watts

APPLICATION OF THE TRUTH ABOUT GOD'S IMMUTABILITY: Every time you see a rainbow remind yourself that you know the immutable God. And remind yourself that a God who is unchanging in His love and kindness to you deserves your unchanging love, loyalty, devotion, and service. If He promises, it will not break His promise.

Who trusts in God’s unchanging love
Builds on the Rock that cannot move.
(Play)

RELATED RESOURCES
IMMUTABILITY OF GOD

Attributes of God - The Repentance and Unchangeability of God- by Dr S Lewis Johnson - Recommended Resource - includes Mp3, Pdf or MS Word document. This is only one study out of over 100 in depth lectures by Dr Johnson on Systematic Theology including studies of the doctrines of God, Christ, the Spirit, Prayer, Salvation, etc. (click for this extensive list)

The Immutability of God by A. W. Pink

God Unchanging by Ray Pritchard - recommended resource

The Immutability of God by A.W. Tozer

God's attribute of Immutability - notes by C H Spurgeon

God Does Not Repent Like a Man by John Piper

The Immutability of God by Bob Deffinbaugh

C H Spurgeon sermons on Immutability...Hebrews 13:8 The Immutability Of Christ; Hebrews 13:8 The Unchangeable Christ

I Change Not by Richard L. Strauss 

Immutability, Immutable in the International Std Bible Encyclopedia

A God of Absolutes - Devotional from Our Daily Bread

Hymns Related to God's Unchanging Nature

ALWAYS AND EVER

ERE MOUNTAINS REARED THEIR FORMS SUBLIME

GOD HAS SPOKEN BY THE PROPHETS

GOD OF ETERNITY

GREAT GOD, HOW INFINITE ART THOU!

GREAT IS THY FAITHFULNESS

HAVE YOU NOT KNOWN, HAVE YOU NOT HEARD

HONOR AND GLORY, POWER AND SALVATION

I HEAR THE WORDS OF LOVE

IMMORTAL, INVISIBLE, GOD ONLY WISE

LORD, THROUGH ALL THE GENERATIONS

NEW WONDERS OF THY MIGHTY HAND

NONE ELSE BUT THEE, FOREVERMORE

O GOD, THE ROCK OF AGES

POWER OF GOD, THE

ROLL OUT, O SONG, TO GOD!

O LORD, THY PERFECT RIGHTEOUSNESS

THROUGH EVERY AGE, ETERNAL GOD

WE COME UNTO OUR FATHERS’ GOD

Impartial means not partial and speaks of God's attribute whereby He treats all men and women equally, not demonstrating favoritism. God does not show prejudice towards or against any person or party.

With an impartial hand, the Lord
Deals out to mortals their reward;
The kind and faithful souls shall find
A God as faithful and as kind.
(Isaac Watts - Play hymn)

O LORD, do not Thine eyes look for truth? (Jer 5:3)

Other Passages Related to the Impartiality of God...

Dt 10:17 "For the LORD your God is the God of gods and the Lord of lords, the great, the mighty, and the awesome God who does not show partiality, nor take a bribe.

Job 34:18 Who says to a king, 'Worthless one,' To nobles, 'Wicked ones'; 19 Who shows no partiality to princes, Nor regards the rich above the poor, For they all are the work of His hands?

Job 36:5 "Behold, God is mighty but does not despise any; He is mighty in strength of
understanding.

Job 37:24 "Therefore men fear Him; He does not regard any who are wise of heart."

Mt 5:44 But I say to you, love your enemies, and pray for those who persecute you 45 (note) in order that you may be sons of your Father who is in heaven; for He causes His sun to rise on the evil and the good, and sends rain on the righteous and the unrighteous.

Acts 10:34,35 And opening his mouth, Peter said: "I most certainly understand now that God is not one to show partiality, but in every nation the man who fears Him and does what is right, is welcome to Him.

Acts 15:8 (Taking his stand before his saved Jewish brethren, Peter defends God's salvation of the Gentiles) "And God, Who knows the heart, bore witness to them (Gentiles), giving them the Holy Spirit, just as He also did to us; 9 and He made no distinction between us (Jews) and them (Gentiles), cleansing their hearts by faith.

Ro 2:6 (God) WILL RENDER TO EVERY MAN ACCORDING TO HIS DEEDS:...9 There will be tribulation and distress for every soul of man who does evil, of the Jew first and also of the Greek, 10 but glory and honor and peace to every man who does good, to the Jew first and also to the Greek. 11 (Why?) For there is no partiality with God. (Notes on Ro 2:6, 2:9, 2:11)

Thy sun Thou bidd’st his genial ray
Alike on all impartial pour;
To all, who hate or bless Thy sway,
Thou bidd’st descend the fruitful shower.
(Play)

Ro 10:12 (note) For there is no distinction between Jew and Greek; for the same Lord is Lord of all, abounding in riches for all who call upon Him; 13 for "WHOEVER WILL CALL UPON THE NAME OF THE LORD WILL BE SAVED."

Gal 2:6 But from those who were of high reputation (what they were makes no difference to me; God shows no partiality)-- well, those who were of reputation contributed nothing to me.

Col 3:25  (see notes) For he who does wrong will receive the consequences of the wrong which he has done, and that without partiality.

Eph 6:9 (see note) And, masters, do the same things to them, and give up threatening, knowing that both their Master and yours is in heaven, and there is no partiality (prosopolepsia - word study) with Him.

Partiality (4382) (prosopolepsia [prosopolempsia] from  prósopon = face, presence, person + lambáno = receive, take into account) literally means to “receive face” or receive one's countenance or one's person which was a Hebraic concept (see TDNT below). The idea is that of looking to see who someone is before deciding how to treat them! In other words, one judges by appearance and on that basis giving special favor and respect (or the converse - refuses to give respect). This noun then pertains to judging others purely on a superficial level, without consideration of the person’s true merits, abilities, or character.

1Pe 1:17 (see notes) And if you address as Father the One who impartially (aprosopoleptos - word study) judges according to each man's work, conduct yourselves in fear during the time of your stay upon earth

Impartially (678) (aprosopoleptos from a = not, without + prósopon = face + lambáno = receive) (this verse is only Scriptural occurrence) literally means "not receiving face" which then came to mean “without respect of persons”.

RELATED RESOURCES
IMPARTIALITY

Richard Baxter put it well noting that...

You may know God, but not comprehend him.

Or as Stephen Charnock wrote...

It is visible that God is; it is invisible what he is.

The ninth tenet in the Athanasian Creed is "The Father incomprehensible, the Son incomprehensible, and the Holy Spirit incomprehensible."

Hail, co-essential Three,
In mystic Unity!
Father, Son, and Spirit, hail!
God by Heaven and earth adored,
God incomprehensible;
One supreme, almighty Lord,
One supreme, almighty Lord.
(Charles Wesley - Play Hymn)

According to Webster’s Dictionary, something that is incomprehensible is “not capable of being comprehended, something that no limits can contain, unintelligible, ...”  So it is with our God.  He is incomprehensible to us.  We cannot know Him by our on power.

Even as we venture into this study of “The Knowledge of God”, we must be ever mindful that God is, in His essence, unknowable.  He is far above us; exalted infinitely higher than we, His creation; infinitely above our conception, thought, and language.  God’s essence (i.e. what He is in and of Himself) is hidden from us and beyond our ability to understand.  We are finite, limited beings.  The finite cannot fully grasp the infinite.   God has given us the ability and information (His Word) to know that He is, but not to totally know what He is.  The Bible does not try to prove the existence of God.  It assumes it as fact.  “In the beginning God ...” (Genesis 1:1)....Therefore, while Scripture teaches the absolute incomprehensibility of God (Job 38-41), it also presents a doctrine of God that fully maintains His knowability.  And He has revealed, at least in part, His purpose for doing so-that we may worship Him as God and have eternal life (see notes Romans 1:20; 21; 22; 23; John 17:3).  Our great God can be known, but He cannot be fully comprehended.

In vain our haughty reason swells,
For nothing's found in thee
But boundless inconceivables
And vast eternity.
Isaac Watts

May the very incomprehensibility of God move us to adoration and worshipful awe.  As A W Tozer said...

If God can be understood and comprehended by any of our human means, then I cannot worship him.

As Augustine said

We are speaking of God.  Is it any wonder that you do not comprehend?  For if you comprehended Him He cannot be God.  Let this be a pious confession of great ignorance rather than a rash profession of knowledge.  To have a very slight knowledge of God is a great blessing.  To comprehend Him is altogether impossible. (See original source for full article & series on : West Boca Presbyterian Church)

Samuel Wesley (1691–1739) expressed God' incomprehensibility in verse writing from his hymn Hail Father, Whose Creating Call (play hymn)

Hail, Father! Whose creating call
Unnumber’d worlds attend;
Jehovah! comprehending all,
Whom none can comprehend.

Martin Luther (1483–1546) wrote that

God’s actual divine essence and his will, administration and works—are absolutely beyond all human thought, human understanding or wisdom; in short, that they are and ever will be incomprehensible, inscrutable, and altogether hidden to human reason.

Puritan Thomas Manton (1620-1677) wrote that

We know God but as men born blind know the fire, they know that there is such a thing as fire, for they feel it warm them, but what it is they know not. So, that there is a God we know, but what he is we know little, and indeed we can never search him out to perfection; a finite creature can never fully comprehend that which is infinite.

Puritan Richard Sibbes asks

How should finite comprehend infinite? We shall apprehend Him, but not comprehend Him.

And as another Puritan Richard Baxter (1615-1691) wrote

You may know God, but not comprehend him.

Puritan John Owen wrote the following thoughts on the "incomprehensible" God: 

(1) What the mind cannot comprehend the heart doth admire and adore, delighting in God, and giving glory unto him in all.

(2) Faith which is truly divine, is never more in its proper exercise--doth never more elevate the soul into conformity unto God--than when it acts in the contemplation and admiration of the most incomprehensible mysteries which are proposed unto it by divine revelation.

(3) In case we are brought unto a loss and disorder in our minds on the contemplation of any one infinite property of God, it is good to divert our thoughts unto the effects of it, such as whereof we have or may have experience...I cannot comprehend the immensity of God's nature; it may be I cannot understand the nature of immensity: yet if I find by experience, and do strongly believe, that he is always present wherever I am, I have the faith of it and satisfaction in it."

Blaise Pascal (1623–1662)

Incomprehensible? But because you cannot understand a thing, it does not cease to exist....It is incomprehensible that God should exist, and it is incomprehensible that He should not exist.

A. W. Tozer (1897- 1963)

We cannot speak of measure or amount or size or weight and at the same time be speaking of God, for all these tell of degrees and there is no degrees in God. All that He is He is without growth or addition or development. Nothing in God is less or more, or large or small. He is what He is in Himself without qualifying thought or word. He is simply God. God is in and beyond Everything.

Tozer also reminds us that

Our concepts of measurement embrace mountains and men, atoms and stars, gravity, energy, numbers, speed, but never God. We cannot speak of measure or amount or size or weight and at the same time be speaking of God, for these tell of degrees and there are no degrees in God. All that He is He is without growth or addition or development.

Tozer said

We know nothing like the divine holiness. It stands apart, unique, unapproachable, incomprehensible and unattainable. The natural man is blind to it. He may fear God’s power and admire his wisdom, but His holiness he cannot even imagine.

Tozer once said that