Judges 21:4 in the World English Bible
On the next day, the people rose early and built an altar there, and offered burnt offerings and peace offerings.
Context
3 And said, O LORD God of Israel, why is this come to pass in Israel, that there should be to day one tribe lacking in Israel?
4 And it came to pass on the morrow, that the people rose early, and built there an altar, and offered burnt offerings and peace offerings.
5 And the children of Israel said, Who is there among all the tribes of Israel that came not up with the congregation unto the LORD? For they had made a great oath concerning him that came not up to the LORD to Mizpeh, saying, He shall surely be put to death.