This states a fact which was not revealed to Moses until after his second intercession when he had come down from the mountain and witnessed the sin of the people Exodus 32:30-34. He was then assured that the Lord's love to His ancient people would prevail God is said, in the language of Scripture, to "repent," when His forgiving love is seen by man to blot out the letter of His judgments against sin (2-Samuel 24:16; Joel 2:13; Jonah 3:10, etc.); or when the sin of man seems to human sight to have disappointed the purposes of grace (Genesis 6:6; 1-Samuel 15:35, etc.). The awakened conscience is said to "repent," when, having felt its sin, it feels also the divine forgiveness: it is at this crisis that God, according to the language of Scripture, repents toward the sinner. Thus, the repentance of God made known in and through the One true Mediator reciprocates the repentance of the returning sinner, and reveals to him atonement.

And the Lord repented of the evil - This is spoken merely after the manner of men who, having formed a purpose, permit themselves to be diverted from it by strong and forcible reasons, and so change their minds relative to their former intentions.

And the Lord repented of the evil which he thought to do unto his people. He did not do what he threatened to do, and seemed to have in his thoughts and designs, but did what Moses desired he would, Exodus 32:12 not that any of God's thoughts or the determinations of his mind are alterable; for the thoughts of his heart are to all generations; but he changes the outward dispensations of his providence, or his methods of acting with men, which he has been taking or threatened to take; and this being similar to what they do when they repent of anything, who alter their course, hence repentance is ascribed to God, though, properly speaking, it does not belong to him, see Jeremiah 18:8. Aben Ezra thinks that the above prayer of Moses, which was so prevalent with God, does not stand in its proper place, but should come after Exodus 32:31 for, to what purpose, says he, should Moses say to the Israelites, Exodus 32:30 "peradventure I shall make an atonement for your sin": if he was appeased by his prayer before?

"And Jehovah repented of the evil, etc." - On the repentance of God, see at Genesis 6:6. Augustine is substantially correct in saying that "an unexpected change in the things which God has put in His own power is called repentance" (contra adv. leg. 1, 20), but he has failed to grasp the deep spiritual idea of the repentance of God, as an anthropopathic description of the pain which is caused to the love of God by the destruction of His creatures. - Exodus 32:14 contains a remark which anticipates the development of the history, and in which the historian mentions the result of the intercession of Moses, even before Moses had received the assurance of forgiveness, for the purpose of bringing the account of his first negotiations with Jehovah to a close. God let Moses depart without any such assurance, that He might display before the people the full severity of the divine wrath.

And the Lord repented of the evil he thought to do - Though he designed to punish them, yet he would not ruin them. See here, the power of prayer, God suffers himself to be prevailed with by humble believing importunity. And see the compassion of God towards poor sinners, and how ready he is to forgive.