Judges 20:31-32

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

32And the people of Benjamin said, "They are routed before us, as at the first." But the people of Israel said, "Let us flee and draw them away from the city to the highways."