Numbers 23:7-8, 11-12

Then Balaam spoke his message: “Balak brought me from Aram, the king of Moab from the eastern mountains. ‘Come,’ he said, ‘curse Jacob for me; come, denounce Israel.’ How can I curse those whom God has not cursed? How can I denounce those whom the LORD has not denounced?

Balak said to Balaam, “What have you done to me? I brought you to curse my enemies, but you have done nothing but bless them!” He answered, “Must I not speak what the LORD puts in my mouth?”