I Samuel 18:13 Midrash

וַיְסִרֵ֤הוּ שָׁאוּל֙ מֵֽעִמּ֔וֹ וַיְשִׂמֵ֥הוּ ל֖וֹ שַׂר־אָ֑לֶף וַיֵּצֵ֥א וַיָּבֹ֖א לִפְנֵ֥י הָעָֽם׃ (פ)

Therefore Saul removed him from him, and made him his captain over a thousand; and he went out and came in before the people.

Read midrashic interpretation of I Samuel 18:13: and classical rabbinic exegesis.