Commentaries
17:1-11 Men so entirely depend upon God in all things, that when he withdraws his help, the most valiant and resolute cannot find their hearts or hands, as daily experience shows.
7. staff of his spear—rather under five feet long, and capable of being used as a javelin (1Sa 19:10). It had an iron head.
one bearing a shield—In consequence of their great size and weight, the Oriental warrior had a trusty and skilful friend, whose office it was to bear the large shield behind which he avoided the missile weapons of the enemy. He was covered, cap-a-pie, with defensive armor, while he had only two offensive weapons—a sword by his side and a spear in his hand.