In 1 Samuel 17, we have the thrilling story of David, the modest shepherd boy who slew Goliath, the arrogant giant of Gath. The drama of that event so occupies our attention that the spiritual lessons contained in the more minute details may escape our notice. Therefore, I'd like to consider the importance of the expression "five smooth stones."  Why more than one stone? Wasn't David a man of faith? Did he doubt that God would give hi…