Numbers 31:14-18
14And Moses was angry with the officers of the army, the commanders of thousands and the commanders of hundreds, who had come from service in the war. 15So Moses said to them, “Have you 1spared aall the women? 16“aBehold, these 1caused the sons of Israel, through the word of bBalaam, to 2act unfaithfully against Yahweh in the matter of Peor, so the plague was among the congregation of Yahweh. 17“aSo now, kill every male among the little ones, and kill every woman who has known man 1intimately. 18“But all the 1girls who have not known man 2intimately, 3spare for yourselves.