40 Then David took his shepherd's staff, selected five smooth stones from the brook, and put them in the pocket of his shepherd's pack, and with his sling in his hand approached Goliath. 41 As the Philistine paced back and forth, his shield bearer in front of him, he noticed David. 42 He took one look down on him and sneered - a mere youngster, apple-cheeked and peach-fuzzed. 43 The Philistine ridiculed David. "Am I a dog that you come after me with a stick?" And he cursed him by his gods.
Matthew Henry's Commentary on 1 Samuel 17:40-43
Commentary on 1 Samuel 17:40-47
(Read 1 Samuel 17:40-47)
The security and presumption of fools destroy them. Nothing can excel the humility, faith, and piety which appear in David's words. He expressed his assured expectation of success; he gloried in his mean appearance and arms, that the victory might be ascribed to the Lord alone.