Joshua 8:23

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

22 Meanwhile, those in the ambush came out of the city against them, and the men of Ai were trapped between the Israelite forces on both sides. So Israel struck them down until no survivor or fugitive remained.

23 But they took the king of Ai alive and brought him to Joshua.

24 When Israel had finished killing all the men of Ai who had pursued them into the field and wilderness, and when every last one of them had fallen by the sword, all the Israelites returned to Ai and put it to the sword as well.

25 A total of twelve thousand men and women fell that day—all the people of Ai.