Numbers 31:2-5

Living Bible

31 ^1-2 Then the Lord said to Moses, “Take vengeance on the Midianites for leading you into idolatry, and then you must die.”

³ Moses said to the people, “Some of you must take arms to wage Jehovah’s war against Midian. ^4-5 Conscript 1,000 men from each tribe.” So this was done; and out of the many thousands of Israel, 12,000 armed men were sent to battle by Moses.