Judges 20:2

20:2 The leaders of all the people from all the tribes of Israel took their places in the assembly of God’s people, which numbered four hundred thousand sword-wielding foot soldiers.

Judges 21:12

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.