Joshua means God is Saviour. As borne by the Israelitish leader, it
pointed both him and the people away from him to the unseen and
omnipotent source of their victory, and was in one word an explanation
of their whole history, with all its miracles of deliverance and
preservation of that handful of people against the powerful nations
around. It taught the leader that he was only the lieutenant of an
unseen Captain. It taught the soldiers that 'they got not the land in
possession by their own arms, but because He had a favour unto them.'