1 Samuel 17:18 - Ellicott's Commentary On The Whole Bible

Look how thy brethren fare. — The same learned commentator (Wordsworth), following out this curious line of Patristic interpretation, remarks on these words: “David is sent by his father to his brethren from Bethlehem. So the Divine David, Jesus Christ, who was born at Bethlehem, was sent to His brethren by his Heavenly Father.” He completes the analogy between David and Christ by pointing out how David was ill-received by his brethren, though he came at his father’s bidding to show them an act of kindness; so Christ, when sent by His Father from heaven on an embassy of love, was ill-received by His own brethren, the Jews. “He came unto His own, and His own received Him not” (John 1:11).