20 When the men of Ai looked behind them, they saw, and behold, the smoke of the city ascended up to heaven, and they had no power to flee this way or that way. The people who fled to the wilderness turned back on the pursuers.

Matthew Henry's Commentary on Joshua 8:20

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.