Smoke behind them

20Then the men of Ai turned behind them and looked, and behold, the smoke of the city was going up to the sky, and there was no power in them to flee this way or that. And the people who had fled to the wilderness turned back against the pursuer.

21When Joshua and all Israel saw that the ambush had captured the city and that the smoke of the city had gone up, they turned back and struck down the men of Ai.

22And these came out from the city to meet them, so that they were in the midst of Israel, these on one side and those on the other; and they struck them down until he left for him not a survivor or a fugitive.