Numbers 31:2-4

New Revised Standard Version Catholic Edition

² “Avenge the Israelites on the Midianites; afterward you shall be gathered to your people.” ³ So Moses said to the people, “Arm some of your number for the war, so that they may go against Midian, to execute the Lord’s vengeance on Midian. ⁴ You shall send a thousand from each of the tribes of Israel to the war.”