Numbers 31:13-17

And Moses, Eleazar the priest, and all the leaders of the congregation went out to meet them outside the camp.

But 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.

And Moses said to them, “Have you spared all the women?

Behold, they caused the sons of Israel, through the counsel of Balaam, to be unfaithful to the Lord in the matter of Peor, so that the plague took place among the congregation of the Lord!

Now therefore, kill every male among the little ones, and kill every woman who has known a man intimately.