Judges 20:29

27The children of Israel asked the LORD (for the ark of the covenant of God was there in those days,

28and Phinehas, the son of Eleazar, the son of Aaron, stood before it in those days), saying, “Shall I yet again go out to battle against the children of Benjamin my brother, or shall I cease?” The LORD said, “Go up; for tomorrow I will deliver him into your hand.”

29Israel set ambushes all around Gibeah.

30The children of Israel went up against the children of Benjamin on the third day, and set themselves in array against Gibeah, as at other times.

31The children of Benjamin went out against the people, and were drawn away from the city; and they began to strike and kill of the people as at other times, in the highways, of which one goes up to Bethel and the other to Gibeah, in the field, about thirty men of Israel.