Numbers 22:5-7

5And he sent messengers unto Balaam the son of Beor, to Pethor, which is by the River, to the land of the children of his people, to call him, saying, Behold, there is a people come out from Egypt: behold, they cover the face of the earth, and they abide over against me. 6Come now therefore, I pray thee, curse me this people; for they are too mighty for me: peradventure I shall prevail, that we may smite them, and that I may drive them out of the land; for I know that he whom thou blessest is blessed, and he whom thou cursest is cursed.

7And the elders of Moab and the elders of Midian departed with the rewards of divination in their hand; and they came unto Balaam, and spake unto him the words of Balak.