Numbers 23:11

Behold, there is a people come out of Egypt, which covereth the face of the earth: come now, curse me them; peradventure I shall be able to overcome them, and drive them out.

And he took up his parable, and said, Balak the king of Moab hath brought me from Aram, out of the mountains of the east, saying, Come, curse me Jacob, and come, defy Israel.

And Balak's anger was kindled against Balaam, and he smote his hands together: and Balak said unto Balaam, I called thee to curse mine enemies, and, behold, thou hast altogether blessed them these three times.

As he loved cursing, so let it come unto him: as he delighted not in blessing, so let it be far from him. As he clothed himself with cursing like as with his garment, so let it come into his bowels like water, and like oil into his bones. Let it be unto him as the garment which covereth him, and for a girdle wherewith he is girded continually. Let this be the reward of mine adversaries from the LORD, and of them that speak evil against my soul.