Joshua 8:18-23

Then GOD spoke to Joshua: “Stretch out the javelin in your hand toward Ai—I’m giving it to you.” Joshua stretched out the javelin in his hand toward Ai. At the signal the men in ambush sprang to their feet, ran to the city, took it, and quickly had it up in flames. The men of Ai looked back and, oh! saw the city going up in smoke. They found themselves trapped with nowhere to run. The army on the run toward the wilderness did an about-face—Joshua and all Israel, seeing that the ambush had taken the city, saw it going up in smoke, turned and attacked the men of Ai. Then the men in the ambush poured out of the city. The men of Ai were caught in the middle with Israelites on both sides—a real massacre. And not a single survivor. Except for the king of Ai; they took him alive and brought him to Joshua.