Joshua 8:18-23

18Then the LORD said to Joshua, “Hold out toward Ai the javelin that is in your hand, for into your hand I will deliver the city.” So Joshua held out toward the city the javelin that was in his hand.

19As soon as he did this, the men in the ambush rose quickly from their position and rushed forward. They entered the city and captured it and quickly set it on fire. 20The men of Ai looked back and saw the smoke of the city rising up into the sky, but they had no chance to escape in any direction; the Israelites who had been fleeing toward the wilderness had turned back against their pursuers. 21For when Joshua and all Israel saw that the ambush had taken the city and that smoke was going up from it, they turned around and attacked the men of Ai. 22Those in the ambush also came out of the city against them, so that they were caught in the middle, with Israelites on both sides. Israel cut them down, leaving them neither survivors nor fugitives.

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