When the Philistine looked and saw David, he despised him because he was just a boy, ruddy and handsome.
We are now coming near this famous combat, and have in these verses the preparations and remonstrances made on both sides. I. The preparations made on both sides for the encounter. The Philistine was already fixed, as he had been daily for the last forty days. Well might he go with his armour, for he had sufficiently proved it.
Commenting on 1 Samuel 17:40-47
And when the Philistine looked about, and saw David, he disdained him,.... He looked about for his antagonist, to take a view of him, what sort of a man he was, expecting to see one much like himself; but observing a puny young man, he despised him in his heart, and perhaps looked upon it as an affront to him to send such a man...
the Philistine said . . . said David to the Philistine--When the two champions met, they generally made each of them a speech, and sometimes recited some verses, filled with allusions and epithets of the most opprobrious kind, hurling contempt and defiance at one another. This kind of abusive dialogue is common among the Arab combatants still.