Numbers 31:14-18 - The Death Of The Midianite Women
14 And Moses was angry with the officers of the host, with the captains over thousands and over hundreds, which came from war and battle, 15 and said unto them, "Have ye saved the women alive? 16 Behold, these caused the children of Israel, through Balaam, to commit trespass against the LORD by the reason of Peor: and there followed a plague among the congregation of the LORD. 17 Now, therefore, slay all the men-children and the women that have lain with men, fleshly. 18 But all the women-children that have not lain with men, keep alive for yourselves.