Jonathan stripped himself of the robe that was on him, and gave it to David, and his clothing, even to his sword, and to his bow, and to his sash.
"The covenant of friendship referred to in 1 Samuel 18:3 was a unilateral (binding on one party only) covenant in which Jonathan committed himself to David with complete disregard for self. The gift given by Jonathan served to ratify the covenant and honor David." [Note: Laney, p. 61.] 