Numbers 22:5-6

5sent messengers to summon Balaam son of Beor, who was at Pethor, near the Euphrates River, in his native land. Balak said: “A people has come out of Egypt; they cover the face of the land and have settled next to me.

6Now come and put a curse on these people, because they are too powerful for me. Perhaps then I will be able to defeat them and drive them out of the land. For I know that whoever you bless is blessed, and whoever you curse is cursed.”