Judges 21:10-12

10So the assembly sent 12,000 capable warriors against Jabesh Gilead. They commanded them, “Go and kill with your swords the inhabitants of Jabesh Gilead, including the women and little children.

11Do 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.

12They 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.