Judges 20:31-32

31The Benjamites came out against them and were drawn away from the city. They began to attack the people as before, killing about thirty men of Israel in the fields and on the roads, one of which led up to Bethel and the other to Gibeah.

32“We are defeating them as before,” said the Benjamites.

But the Israelites said, “Let us retreat and draw them away from the city onto the roads.”