God is not a man, that he should lie - This seems to be spoken to correct the foregoing supposition of Balak that God could change his mind. Even the heathen would not allow that their supreme god could be caught in a falsity. Hence Aeschylus, in Prometh. vinct. 1068: -

Ψευδηγορειν γαρ ουκ επισταται στομα

Το Διον, αλλα παν επος τελει.

"The mouth of Jove knows not to frame a lie;

But every word finds full accomplishment."

God is not a man, that he should lie,.... Man is a creature consisting of a body of flesh and blood, and of a soul, a created and finite spirit; but God, though he has the parts of an human body ascribed to him in a figurative sense, yet is not to be conceived of in a corporeal manner; and though he is a Spirit, yet eternal, immense, and infinite; and much less is as a sinful man, who goes astray from the womb speaking lies; no, let God be true, and every man a liar: he is God, that cannot lie; his counsels of old are faithfulness and truth; his promises yea and amen in Christ; the Scriptures inspired by him are true, and the prophecies of them are punctually accomplished, particularly what he foretold of the people of Israel, and promised unto them; that they should be happy, and inherit the land of Canaan; that be would be true and faithful to them, and there could be no hope, by any means whatever, to make him false and unfaithful to his word: neither the son of man, that he should repent; repentance is found in men, who repent for what they have done, or change their minds, as to what they intended to do or set about; perceiving it to be wrong to do it, or that they are able to do it, some unforeseen thing turning up they were not aware of: but nothing of this kind belongs to God, or can befall him; he never changes his mind, alters his counsels, purposes, and decrees, and never varies in his affections to his people, nor makes void his choice of them, or covenant with them; and his calling of them by his grace, and his gifts of grace bestowed upon them, are without repentance: and particularly with respect to the people of Israel, there was no reason to hope or believe that God would change his purposes or promises respecting their outward happiness, and enjoyment of the land of Canaan; or that ever he would be prevailed upon to curse them, or admit them to be cursed, when he was determined, and had so peremptorily promised that he would bless them:

hath he said, and shall he not do it? or "hath he spoken, and shall he not make it good?" whether it be with regard to things temporal, spiritual, or eternal; for there is no variableness nor shadow of turning in his mind; he never forgets his word, he foresees all events, he is able to perform, and is true and faithful; and therefore whatever is gone out of his lips will never be altered, but will be most certainly fulfilled, Psalm 89:34 Isaiah 14:24.

"God is not a man, that He should lie; nor a son of man, that He should repent: hath He said, and should He not do it? and spoken, and should not carry it out?"

{h} God is not a man, that he should lie; neither the son of man, that he should repent: hath he said, and shall he not do it? or hath he spoken, and shall he not make it good?

(h) God's enemies are compelled to confess that his government is just, constant, and without change or repentance.

23:19 That he should lie - Break his promises made to his people for their preservation and benediction. Repent - Change his counsels or purposes; unless he see iniquity in Jacob.

Margin repent

Scofield "Zech 8:14".

23:11-30 Balak was angry with Balaam. Thus a confession of God's overruling power is extorted from a wicked prophet, to the confusion of a wicked prince. A second time the curse is turned into a blessing; and this blessing is both larger and stronger than the former. Men change their minds, and break their words; but God never changes his mind, and therefore never recalls his promise. And when in Scripture he is said to repent, it does not mean any change of his mind; but only a change of his way. There was sin in Jacob, and God saw it; but there was not such as might provoke him to give them up to ruin. If the Lord sees that we trust in his mercy, and accept of his salvation; that we indulge no secret lust, and continue not in rebellion, but endeavour to serve and glorify him; we may be sure that he looks upon us as accepted in Christ, that our sins are all pardoned. Oh the wonders of providence and grace, the wonders of redeeming love, of pardoning mercy, of the new-creating Spirit! Balak had no hope of ruining Israel, and Balaam showed that he had more reason to fear being ruined by them. Since Balaam cannot say what he would have him, Balak wished him to say nothing. But though there are many devices in man's heart, God's counsels shall stand. Yet they resolve to make another attempt, though they had no promise on which to build their hopes. Let us, who have a promise that the vision at the end shall speak and not lie, continue earnest in prayer, Lu 18:1.