1 Samuel 18:4

And Jonathan 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. Jonathan stripped himself of the robe ... and gave it to David. To receive any part of the dress which had been worn by a sovereign, or Iris oldest son and heir, is deemed in the East the highest honour which can be conferred on a subject (see the note at Esther 6:8). The girdle, being connected with the sword and the bow, may be considered as being part of the military dress, and great value is attached to it in the East.