Numbers 22:7, 17-18

So the elders of Moab and the elders of Midian departed with the diviner’s fee in their hand, and they came to Balaam and spoke to him the words of Balak.

for I will certainly honor you greatly, and I will do whatever you say to me. Therefore please come, curse this people for me.’ ” Then Balaam answered and said to the servants of Balak, “Though Balak were to give me his house full of silver and gold, I could not go beyond the word of the LORD my God, to do less or more.