Numbers 31:6-8

Young's Literal Translation

⁶ and Moses sendeth them, a thousand for a tribe, to the host, them and Phinehas son of Eleazar the priest, to the host; and the holy vessels, and the trumpets of the shouting, in his hand.

⁷ And they war against Midian, as Jehovah hath commanded Moses, and slay every male;

⁸ and the kings of Midian they have slain, besides their pierced ones, Evi, and Rekem, and Zur, and Hur, and Reba, five kings of Midian; and Balaam son of Beor, they have slain with the sword.