1 Samuel 17:32

David said to Saul. What a contrast — a humble shepherd lad encouraging an experienced and successful warrior of Israel! Saul, the only giant of Israel (ch. 10:23), realized that he should have been the one to accept Goliath’s challenge. But a guilty conscience left him fearful and trembling. Had love for God been in his heart it would have been sufficient to cast out all fear; but he had none of the love of God abiding in him. In its place there was only the “torment” of a guilty conscience (see 1 John 2:5; 4:18). David, on the other hand, radiated that spirit of genuine optimism and courage that is the badge of “a conscience void of offence toward God, and toward men” (Acts 24:16; cf. Ps. 51:10, 11). David was as courageous as Saul was cowardly.