וַיִּתְפַּשֵּׁ֣ט יְהוֹנָתָ֗ן אֶֽת־הַמְּעִיל֙ אֲשֶׁ֣ר עָלָ֔יו וַֽיִּתְּנֵ֖הוּ לְדָוִ֑ד וּמַדָּ֕יו וְעַד־חַרְבּ֥וֹ וְעַד־קַשְׁתּ֖וֹ וְעַד־חֲגֹרֽוֹ׃
And Jonathan stripped himself of the robe that was upon him, and gave it to David, and his apparel, even to his sword, and to his bow, and to his girdle.
Read midrashic interpretation of I Samuel 18:4: and classical rabbinic exegesis.