1 Samuel 18:4

And Jonathan, as a testimony and token of his love and friendship, stripped himself of the robe that was upon him, and gave it to David, and his garments, even to his sword and to his bow and to his girdle. Thus the barrier of rank and position was completely set aside; for Jonathan's object was not only to have David appear at court in proper dress, but also to honor David as a military hero, the conqueror of the terrible Philistine, who should therefore appear in a dress befitting his station.