Numbers 31:17 BBE

¹⁵  And Moses said to them, Why have you kept all the women safe?

¹⁶  It was these who, moved by Balaam, were the cause of Israel's sin against the Lord in the question of Peor, because of which disease came on the people of the Lord.

¹⁷  So now put every male child to death, and every woman who has had sex relations with a man.

¹⁸  But all the female children who have had no sex relations with men, you may keep for yourselves.

¹⁹  You yourselves will have to keep outside the tent-circle for seven days, anyone of you who has put any person to death or come near a dead body; and on the third day and on the seventh day make yourselves and your prisoners clean.