Numbers 23:19 - Joseph Benson’s Commentary on the Old and New Testaments

That he should lie Break his promise made to his people for their preservation and benediction. Neither the son of man that he should repent Change his counsels or purposes, as men change theirs, either because they are not able to execute them, or because they are better informed, or their minds are changed by some unexpected occurrence, or by their passions, none of which things have place in God. When the inspired writers speak of God's repenting, as Jeremiah 18:8, and Amos 7:3-6, they are to be understood as speaking figuratively, and adapting their language to our apprehensions. They only mean that God changes the course of his providence toward mankind, according as he sees a change in their dispositions and actions. See note on Genesis 6:6.