Numbers 22:20-22

And God came to Balaam at night and said to him, “If the men have come to call you, rise, go with them; but only do what I tell you.” So Balaam rose in the morning and saddled his donkey and went with the princes of Moab. But God’s anger was kindled because he went, and the angel of the LORD took his stand in the way as his adversary. Now he was riding on the donkey, and his two servants were with him.