Judges 21:4-6

4So it was, on the next morning, that the people rose early and built an altar there, and offered burnt offerings and peace offerings.

5The children of Israel said, “Who is there among all the tribes of Israel who did not come up with the assembly to the Lord?” For they had made a great oath concerning anyone who had not come up to the Lord at Mizpah, saying, “He shall surely be put to death.”

6And the children of Israel grieved for Benjamin their brother, and said, “One tribe is cut off from Israel today.