1. And the Lord said unto Joshua, etc It was of great consequence to Joshua, as well as the people, to inspire new courage, that they might prepare with confidence to assault the city of Ai, from which they had lately been repulsed with loss and greater disgrace. God, therefore, to inspire them with intrepidity on this expedition, promises that he will give them the city. With the same view he enjoins them to fight by stratagem more than open war, to entice the enemy out, and to select a secret place for an ambuscade which might take them by surprise. A few thousands might without any difficulty have been overthrown by an immense host attacking the city suddenly and unexpectedly. But as we formerly saw that the hearts of all had melted away, God consulted for their weakness by laying no greater burden upon them than they were able to bear, until they had recovered from their excessive panic, and could execute his commands with alacrity.
It is true, indeed, that he now used their own exertion, partly that they might not always keep looking for miracles, and so give themselves up to laziness, and partly that in different and unequal modes of acting they might nevertheless recognize that his power is the same. But care must be taken not to omit the special reason, namely, that not having yet recovered from their terror, they could scarcely have been induced to engage in an open conflict, had they not seen stratagem employed as a subsidiary aid. The first place, however, is due to the promise, Fear not, for I have delivered it into thy hands: for although it is verbally directed to Joshua, it belongs in common to the whole people, as it was most necessary that all to a man should be freed from anxiety and furnished with new confidence. The order to burn the city like Jericho, appears to be a concession to the popular feeling, the vengeance thus taken serving to wipe out the remembrance of their disgrace. At the same time that they may engage in the expedition more willingly, the spoils are left to them as the reward of victory.