Joshua 8:20-24

20The men of Ai turned and looked back, and smoke from the city was rising to the sky! They could not escape in any direction, and the troops who had fled to the wilderness now became the pursuers.

21When Joshua and all Israel saw that the men in ambush had captured the city and that smoke was rising from it, they turned back and struck down the men of Ai.

22Then men in ambush came out of the city against them, and the men of Ai were trapped between the Israelite forces, some on one side and some on the other. They struck them down until no survivor or fugitive remained,

23but they captured the king of Ai alive and brought him to Joshua.

24When Israel had finished killing everyone living in Ai who had pursued them into the open country, and when every last one of them had fallen by the sword, all Israel returned to Ai and struck it down with the sword.