Judges 21:4

21:4 The next morning the people got up early and built an altar there. They offered up burnt sacrifices and token of peace.

Judges 20:26

20:26 So all the Israelites, the whole army, went up to Bethel. They wept and sat there before the Lord; they did not eat anything that day until evening. They offered up burnt sacrifices and tokens of peace to the Lord.