Citation sur Samuel 1 17:14

נחשון בן עמינדב למטה יהודה, “Nachshon, son of Aminadav, of the tribe of Yehudah.” It is noteworthy that the title of these princes, i.e. נשיא, is mentioned with all of them except with the prince of Yehudah. This was a lesson to the other princes to be humble and not to introduce themselves with their title when asked who they were. A classic example is when Yehudah begs Joseph to accept him as a slave instead of his brother Binyamin, and he says ישב נא עבדך תחת הנער עבד לאדוני, “let your servant take the place of the lad as your servant, my lord.” (Genesis 44,33) We find similarly that David is described as דוד הקטן Samuel I 17,14, [although as opposed to his older brothers he had already been the king’s court musician. Ed.]