Numbers 31:15-17

31:15 Moses said to them, “Have you allowed all the women to live? 31:16 Look, these people through the counsel of Balaam caused the Israelites to act treacherously against the Lord in the matter of Peor – which resulted in the plague among the community of the Lord! 31:17 Now therefore kill every boy, and kill every woman who has had sexual intercourse with a man.