Joshua 8:19

Context8:19 When he held out his hand, the men waiting in ambush rose up quickly from their place and attacked. 1 They entered the city, captured it, and immediately set it on fire.
Joshua 8:21
Context8:21 When Joshua and all Israel saw that the men in ambush had captured the city and that the city was going up in smoke, 2 they turned around and struck down the men of Ai.