Joshua made peace with them, and made a covenant with them, to let them live: and the princes of the congregation swore to them.
"Ironically, of all people, Joshua failed to inquire of the Lord. Joshua had gone up the mountain of revelation with Moses (Exodus 24:13-14); and in his preparation for leadership, he had been trained in the use of the Urim and Thummim for determining the will of God (Numbers 27:18-21). How easy it is even in the service of the Lord to take God’s guidance and blessing for granted!" [Note: Madvig, p. 297.] 