I am the Lord, I change not - , better, more concisely, "I, the Lord

I change not - . The proper name of God, "He who Is," involves His unchangeableness. For change implies imperfection; it changes to that which is either more perfect or less perfect: to somewhat which that being, who changes, is not or has not. But God has everything in Himself perfectly. "Thou Alone, O Lord, Art what Thou Art, and Thou Art Who Art. For what is one thing in the whole and another in parts, and wherein is anything subject to change, is not altogether what Is. And what beginneth from not being, and can be conceived, as not being, and only subsisteth through another thing, returns to not-being; and what hath a 'has been,' which now is not, and a 'to be,' which as yet is not, that is not, properly and absolutely. But Thou Art what Thou Art. For whatever Thou Art in any time or "way," that Thou Art wholly and always; and Thou Art, Who Art properly and simply, because Thou hast neither 'to have been' or 'to be about to be;' but only to be present; and canst not be conceived, ever not to have been." "There is only one simple Good, and, therefore, One Alone Unchangeable, which is God."

"Our" life is a "becoming" rather than a simple "being;" it is a continual losing of what we had, and gaining what we had not, for "in as far as any one is not what he was, and is what he was not, so far forth he dieth and ariseth;" dieth to what he was, ariseth to be something otherwise.

"Increase evidences a beginning; decrease, death and destruction. And, therefore, Malachi says, 'I am God, and I change not,' ever retaining His own state of being; because what has no origin cannot be changed."

So the Psalmist says Psalm 102:27, "As a vesture, Thou shalt change them and they shall be changed, but Thou art the Same, and Thy years shall not fail;" and Balaam, controlled by God Numbers 23:19. "God is not a man, that He should lie, or the son of man, that He should repent;" and James 1:17, "with whom is no variableness, neither shadow of turning."

Of this unchangeableness of God, His holy ones partake, as far as they fix themselves on God. "The soul of man hangs upon Him, by whom it was made. And because it was made, to desire God Alone, but everything which it desires below is less than He, rightly doth not that suffice it, which is not God. Hence, is it, that the soul is scattered hither and thither, and is repelled from everything, toward which it is borne, through satiety of them. But holy men guard themselves by cautious observation, lest they should be relaxed from their intentness by change, and because they desire to be the same, wisely bind themselves to the thought, whereby they love God. For in the contemplation of the Creator, they will receive this, that they should ever enjoy one stability of mind. No changeableness then dissipates them, because their thought ever perseveres, free from unlikeness to itself. This therefore they now imitate, striving with effort, which hereafter they shall with joy receive as a gift." To which unchangeableness the prophet had bound himself by the power of love, when he said Psalm 27:4, "One thing I required of the Lord, which I will require, that I may dwell in the house of the Lord." To this unity Paul clave intently, when he said, Philippians 3:13-14 : "One thing I do, forgetting those things which are behind and stretching forth to those things which are before, I press forward toward the mark for the prize of the high calling of God in Christ Jesus."

And ye sons of Jacob are not consumed - Man would often have become weary of man's wickedness and waywardness. We are impatient at one another, readily despair of one another. God might justly have cast off them and us; but He changes not. He abides by the covenant which He made with their fathers; He consumed them not; but with His own unchangeable love awaited their repentance. Our hope is not in ourselves, but in God.

I am the Lord, I change not - The new dispensation of grace and goodness, which is now about to be introduced, is not the effect of any change in my counsels; it is, on the contrary, the fulfillment of my everlasting purposes; as is also the throwing aside of the Mosaic ritual, which was only intended to introduce the great and glorious Gospel of my Son.

And because of this ancient covenant, ye Jews are not totally consumed; but ye are now, and shall be still, preserved as a distinct people - monuments both of my justice and mercy.

For I am the Lord,.... Or Jehovah; a name peculiar to the most High, and so a proof of the deity of Christ, who here speaks; and is expressive of his being; of his self-existence; of his purity and simplicity; of his immensity and infinity; and of his eternity and sovereignty:

I change not; being the same today, yesterday, and forever; he changed not in his divine nature and personality by becoming man; he took that into union with him he had not before, but remained the same he ever was; nor did he change in his threatenings of destruction to the Jews, which came upon them according to his word; nor in his promises of his Spirit, and presence, and protection to his people; nor will he ever change in his love and affections to them; nor in the efficacy of his blood, sacrifice, and righteousness; wherefore, as this is introduced to assure the truth and certainty of what is said before, concerning his being a swift witness against the wicked, so also for the comfort of the saints, as follows. The Targum is,

"for I the Lord have not changed my covenant.''

Therefore ye sons of Jacob are not consumed; such who were Israelites indeed, true believers in Christ; these were not consumed when the wicked Jews were, but were directed to leave the city before its destruction, and go to another place, as they did, whereby they were preserved; and so it was, that not one Christian perished in it; See Gill on Matthew 24:13 and so it is owing to the unchangeable love, grace, and power of Christ, that none of his perish internally or eternally, but have everlasting life.

For I am the LORD, I change not; therefore ye sons of Jacob {f} are not consumed.

(f) They murmured against God, because they did not see his help which was ever present to defend them: and therefore he accuses them of ingratitude, and shows that in that they are not daily consumed, it is a sign that he still defends them, and so his mercy towards them never changes.

3:6 I change not - I have an unchangeable hatred to sin: and my long suffering also changeth not, therefore you are not consumed in your sins. Not consumed - God is the same in his wisdom to order the rewards of good and bad in the fittest season, therefore neither the one nor the other are consumed, but preserved to the season appointed of God.

6. the Lord-Jehovah: a name implying His immutable faithfulness in fulfilling His promises: the covenant name of God to the Jews (Ex 6:3), called here "the sons of Jacob," in reference to God's covenant with that patriarch.

I change not-Ye are mistaken in inferring that, because I have not yet executed judgment on the wicked, I am changed from what I once was, namely, a God of judgment.

therefore ye . are not consumed-Ye yourselves being "not consumed," as ye have long ago deserved, are a signal proof of My unchangeableness. Ro 11:29: compare the whole chapter, in which God's mercy in store for Israel is made wholly to flow from God's unchanging faithfulness to His own covenant of love. So here, as is implied by the phrase "sons of Jacob" (Ge 28:13; 35:12). They are spared because I am Jehovah, and they sons of Jacob; while I spare them, I will also punish them; and while I punish them, I will not wholly consume them. The unchangeableness of God is the sheet-anchor of the Church. The perseverance of the saints is guaranteed, not by their unchangeable love to God, but by His unchangeable love to them, and His eternal purpose and promise in Christ Jesus [Moore]. He upbraids their ingratitude that they turn His very long-suffering (La 3:22) into a ground for skeptical denial of His coming as a Judge at all (Ps 50:1, 3, 4, 21; Ec 8:11, 12; Isa 57:11; Ro 2:4-10).

3:1-6 The first words of this chapter seem an answer to the scoffers of those days. Here is a prophecy of the appearing of John the Baptist. He is Christ's harbinger. He shall prepare the way before him, by calling men to repentance. The Messiah had been long called, He that should come, and now shortly he will come. He is the Messenger of the covenant. Those who seek Jesus, shall find pleasure in him, often when not looked for. The Lord Jesus, prepares the sinner's heart to be his temple, by the ministry of his word and the convictions of his Spirit, and he enters it as the Messenger of peace and consolation. No hypocrite or formalist can endure his doctrine, or stand before his tribunal. Christ came to distinguish men, to separate between the precious and the vile. He shall sit as a Refiner. Christ, by his gospel, shall purify and reform his church, and by his Spirit working with it, shall regenerate and cleanse souls. He will take away the dross found in them. He will separate their corruptions, which render their faculties worthless and useless. The believer needs not fear the fiery trial of afflictions and temptations, by which the Saviour refines his gold. He will take care it is not more intense or longer than is needful for his good; and this trial will end far otherwise than that of the wicked. Christ will, by interceding for them, make them accepted. Where no fear of God is, no good is to be expected. Evil pursues sinners. God is unchangeable. And though the sentence against evil works be not executed speedily, yet it will be executed; the Lord is as much an enemy to sin as ever. We may all apply this to ourselves. Because we have to do with a God that changes not, therefore it is that we are not consumed; because his compassions fail not.