וַיִּקַּ֨ח יִשַׁ֜י חֲמ֥וֹר לֶ֙חֶם֙ וְנֹ֣אד יַ֔יִן וּגְדִ֥י עִזִּ֖ים אֶחָ֑ד וַיִּשְׁלַ֛ח בְּיַד־דָּוִ֥ד בְּנ֖וֹ אֶל־שָׁאֽוּל׃
And Jesse took an ass laden with bread, and a bottle of wine, and a kid, and sent them by David his son unto Saul.
Read kabbalistic (mystical) interpretation of I Samuel 16:20: and classical mystical sources.