Numbers 23:16-20

The LORD met with Balaam and put a word in his mouth and said, “Go back to Balak and give him this word.” So he went to him and found him standing beside his offering, with the Moabite officials. Balak asked him, “What did the LORD say?” Then he spoke his message: “Arise, Balak, and listen; hear me, son of Zippor. God is not human, that he should lie, not a human being, that he should change his mind. Does he speak and then not act? Does he promise and not fulfill? I have received a command to bless; he has blessed, and I cannot change it.