Judges 21:4-6 Modern English Version (MEV)
4 In the morning the people got up early and built an altar there. They offered burnt offerings and peace offerings.
5 The children of Israel said, “Who from all the tribes of Israel did not go up with the assembly to the Lord?” For they vowed a solemn oath regarding whoever did not go up to the Lord at Mizpah stating, “He must be killed.”
6 The children of Israel lamented for Benjamin their brother, and said, “One tribe is cut off from Israel today.