Judges 20:31-32

31The men of Benjamin went out to attack Israel’s troops and were led away from the city. They started to inflict casualties as before. They killed about 30 men from Israel in the open country and on the roads to Bethel and Gibeah.

32The men of Benjamin shouted, “They’re defeated as before!” But the men of Israel had said, “Let’s flee in order to lead them from the city to the roads.”