Rashi on Deuteronomy 1:15/רש"י על דברים א׳:ט״ו

1ואקח את ראשי שבטיכם SO I TOOK THE HEADS OF YOUR TRIBES — I took them by fine words: Happy are you! Over whom are you about to be appointed? Over the sons of Abraham, Isaac and Jacob — over the sons of people who are called God's brethren and friends, God's portion and inheritance and to whom is applied every other expression denoting affection (Sifrei Devarim 15:1; cf. Targum Jonathan).

2אנשים חכמים וידעים [AND I TOOK] MEN, WISE AND KNOWN — but understanding men I could not find (Nedarim 20b). This, too, was one of the seven qualifications which Jethro mentioned to Moses, but he found only three: men, i.e. righteous men, wise and known (Sifrei Devarim 15:2).

3ראשים עליכם [AND I MADE THEM] HEADS OVER YOU — i.e. that you should pay them respect — regard them as first in buying, first in selling, first in all matters of business — coming into the Synagogue and House of Study last and leave first (so that all should rise out of respect) (cf. Sifrei Devarim 15:3).

4שרי אלפים means, one officer who is appointed over one thousand.

5שרי מאות means, one who is appointed over one hundred.

6ושטרים AND COURT-OFFICERS — i.e., and also I appointed court-officers over you, לשבטיכם ACCORDING TO YOUR TRIBES — these are they who bind and flog with the lash at the bidding of the judges (cf. Sifrei Devarim 15:5).