John Dummelow's Commentary on the Bible - Joshua 8:1-35
The Conquest of Ai. The Covenant confirmed upon Mt. Ebal1-29. The Taking of Ai. Edersheim explains that Joshua detailed a corps of 30,000 men, of whom 5,000 were placed W. of Ai in a wood. The 25,000 pitched K of Ai, and subsequently moved forward into the valley below the city. Then came the feigned attack and retreat eastward, the signal from Joshua, and the assault by the ambush from the rear. It should be noted, however, that there are two accounts of the ambush, one in Joshua 8:3, Joshua... read more
Expository Notes of Dr. Thomas Constable - Joshua 8:14-23
Evidently men from Bethel, Ai’s neighbor, joined with the men of Ai to repulse Israel’s attack (Joshua 8:17). These two cities had apparently made a treaty for mutual defense.Stretching out his javelin (Joshua 8:18) was Joshua’s prearranged signal to his men in ambush to attack. It symbolized that victory came from the Lord (cf. Exodus 14:16; Exodus 17:8-12). read more