Joshua 8:14-16

14When the king of Ai saw the Israelites, the men of the city hurried and went out early in the morning so that he and all his people could engage Israel in battle at a suitable place facing the Arabah. But he did not know there was an ambush waiting for him behind the city.

15Joshua and all Israel pretended to be beaten back by them and fled toward the wilderness.

16Then all the troops of Ai were summoned to pursue them, and they pursued Joshua and were drawn away from the city.