You shall do to Ai and her king as you did to Jericho and her king: only the spoil of it, and the cattle of it, shall you take for a prey to yourselves: set you an ambush for the city behind it.
lay thee an ambush for the city behind it; at the west side of it: some have called in question the lawfulness of the ambush, but, as this was appointed by the Lord, there is no room for it.