Numbers 23:16-20

And the LORD met Balaam and put a word in his mouth and said, “Return to Balak, and thus shall you speak.” And he came to him, and behold, he was standing beside his burnt offering, and the princes of Moab with him. And Balak said to him, “What has the LORD spoken?” And Balaam took up his discourse and said, “Rise, Balak, and hear; give ear to me, O son of Zippor: God is not man, that he should lie, or a son of man, that he should change his mind. Has he said, and will he not do it? Or has he spoken, and will he not fulfill it? Behold, I received a command to bless: he has blessed, and I cannot revoke it.