21 For 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.
21 And when Joshua and all Israel saw that the ambush had taken the city, and that the smoke of the city ascended, then they turned again, and slew the men of Ai.
21 And when Joshua and all Israel saw that the ambush had captured the city, and that the smoke of the city went up, then they turned back and struck down the men of Ai.
21 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.
21 Now when Joshua and all Israel saw that the ambush had taken the city and that the smoke of the city ascended, they turned back and struck down the men of Ai.
21 When Joshua and all the other Israelites saw that the ambush had succeeded and that smoke was rising from the town, they turned and attacked the men of Ai.
Matthew Henry's Commentary on Joshua 8:21
Commentary on Joshua 8:3-22
(Read Joshua 8:3-22)
Observe Joshua's conduct and prudence. Those that would maintain their spiritual conflicts must not love their ease. Probably he went into the valley alone, to pray to God for a blessing, and he did not seek in vain. He never drew back till the work was done. Those that have stretched out their hands against their spiritual enemies, must never draw them back.