Judges 20:22-23, 26

The Israelites went back to the sanctuary and wept before GOD until evening. They again inquired of GOD, “Shall we again go into battle against the Benjaminites, our brothers?” GOD said, “Yes. Attack.”

All the People of Israel, the whole army, were back at Bethel, weeping, sitting there in the presence of GOD. That day they fasted until evening. They sacrificed Whole-Burnt-Offerings and Peace-Offerings before GOD.