Joshua 8 tells of the strategy in the taking of Ai and the events that led up to this conquest. After the shameful defeat of chapter 7 Joshua is encouraged to return and take the city by surprise by using an ambush and pincer movement to encircle and trap the Amorite army. Thirty thousand men remained silent and hidden in thickets near Ai while Joshua and the bulk of the army made a front line attack against the city. The army pretended to be in panic and lured the Amorites from the city which was then smitten while the Amorites were pursuing Israel. The occupiers of the city than came out against the Amorite army and Joshua stretched out his spear, when the LORD said that the moment was right, and the fleeing Israelites turned to encircle the enemy and destroy them. The entire populace of Ai was destroyed and their livestock taken by Israel as spoil. The city was burned by fire and then buried under a heap of stones.
Verses 30-35 describes Joshua taking Israel to Shechem, building the altar of Yahweh on Mount Ebal, offering sacrifices, writing on plastered stones the blessings and curses from the book of Deuteronomy and pronouncing these blessings and curses on each of the six tribes on Ebal – for curses – and blessings on the six tribes on Mount Gerazim. Both natural Israelites and the strangers in their midst assented to the words of the covenant.