Judges 20:31-32

311The sons of Benjamin went out 2against the people and were drawn away from the city, and they began to strike 3and kill some of the people as at other times, on the highways, one of which goes up to Bethel and the other to Gibeah, and in the field, about thirty men of Israel.

32The sons of Benjamin said, “They are struck down before us, as at the first.” But the sons of Israel said, “Let us flee that we may draw them away from the city to the highways.”