Numbers 22:16-20

They came to Balaam and said to him, “This is what Balak the son of Zippor says: ‘I beg you, let nothing keep you from coming to me;

for I will indeed honor you richly, and I will do whatever you tell me. Please come then, curse this people for me.’ ”

But Balaam replied to the servants of Balak, “Even if Balak were to give me his house full of silver and gold, I could not do anything, either small or great, contrary to the command of the Lord my God.

Now please, you also stay here tonight, and I will find out what else the Lord will say to me.”

And God came to Balaam at night and said to him, “If the men have come to call you, rise and go with them; but you shall do only the thing that I tell you.”