Numbers 31:16 in the King James Version
Behold, these caused the children of Israel, through the counsel of Balaam, to commit trespass against the LORD in the matter of Peor, and there was a plague among the congregation of the LORD.
Context
15 Moses said to them, “Have you saved all the women alive?
16 Behold, these caused the children of Israel, through the counsel of Balaam, to commit trespass against the LORD in the matter of Peor, and so the plague was among the congregation of the LORD.
17 Now therefore kill every male among the little ones, and kill every woman who has known man by lying with him.