Numbers 22:18

22:18 Balaam replied to the servants of Balak, “Even if Balak would give me his palace full of silver and gold, I could not transgress the commandment of the Lord my God to do less or more.

Numbers 22:38

22:38 Balaam said to Balak, “Look, I have come to you. Now, am I able to speak just anything? I must speak only the word that God puts in my mouth.”