Judges 20:31-32

31The children of Benjamin came out against the people, but they were drawn away from the town, and they began to strike and kill some of the people (about 30 men of Israel), as at other times, on the highways, of which one goes up to Bethel and the other to Gibeah.

32So the children of Benjamin said, “They are defeated before us as before.” But Bnei-Yisrael said, “Let us flee and draw them away from the town to the highways.”