Numbers 23:25-30

25And Balak said to Balaam, "Do not curse them at all, and do not bless them at all."

26But Balaam answered Balak, "Did I not tell you, 'All that the Lord says, that I must do'?"

27And Balak said to Balaam, "Come now, I will take you to another place. Perhaps it will please God that you may curse them for me from there."

28So Balak took Balaam to the top of Peor, which overlooks the desert.

29And Balaam said to Balak, "Build for me here seven altars and prepare for me here seven bulls and seven rams."

30And Balak did as Balaam had said, and offered a bull and a ram on each altar.