Beyond the well-known story of David and Goliath, what was the primary theological significance of their conflict for the Israelites, as understood in 1 Samuel 17?

A It demonstrated David's superior military strategy and leadership skills. B It proved that physical strength and weaponry are insignificant against divine favor. C It served as a public spectacle to entertain King Saul and his court. D It was a symbolic representation of the ongoing conflict between Israel and the Philistines.