Joshua 8:14-16

14When the king of Ai saw Israel, he and his whole army quickly got up the next day and went out to fight Israel at the meeting place near the Arabah. But he did not realize men were hiding behind the city.

15Joshua and all Israel pretended to be defeated by them and they retreated along the way to the desert.

16All the reinforcements in Ai were ordered to chase them; they chased Joshua and were lured away from the city.