Judges 21:11-12
21:11 Do this: exterminate every male, as well as every woman who has had sexual relations with a male. But spare the lives of any virgins.” So they did as instructed.
21:12 They found among the inhabitants of Jabesh Gilead four hundred young girls who were virgins – they had never had sexual relations with a male. They brought them back to the camp at Shiloh in the land of Canaan.