Midrash su I Cronache 11:6

David said to his men: Whoever will go up first, and remove those images upon which the sign of the covenant of Abraham's oath is written, he shall be the chief. And Joab, the son of Zeruiah, went up, and he became the chief, as it is said, "And Joab the son of Zeruiah went up first, || and was made chief" (1 Chron. 11:6). Afterwards he bought the city of the Jebusites for Israel by a purchase with gold and with a perpetual deed for a perpetual possession. What did David do? He took from each tribe fifty shekels; verily all of them amounted to six hundred shekels, as it is said, "So David gave to Ornan for the place six hundred shekels of gold by weight" (1 Chron. 21:25).

(Bamidbar 27:17) "who will go out before them and who will come in before them": Not as others, who send others in the vanguard and who bring up the rear. But as Moses did, viz. (Bamidbar 21:34) "And the L-rd said to Moses: Do not fear him (Og, [to confront him in the vanguard]) for I have delivered him into your hand." And as Joshua did, viz. (Joshua 5:13) "And Joshua went up to him, and said: 'Are you for us or for our foes?'" And as Pinchas did, viz. (Bamidbar 31:6) "And Moses sent them to the war, a thousand of every tribe, to the war, them and Pinchas (in the vanguard) etc." (Ibid. 27:17) "who will go out before them" — at the head, viz. (I Chronicles 11:6) "And Yoav ben Tzeruyah went up first, and he was at the head." "who will go out before them" — in a troop. "and who will come in before them" — in a troop. "who will go out before them" — on the way. "and who will come in before them" — on the way. "and who will take them out" — in his merits. "and who will bring them back" — in his merits. "and who will take them out" — with a count. "and who will bring them back" — with a count (i.e., none missing), as it is written (Bamidbar 31:44) "And they said to Moses: Your servants have counted the men of war who were under our charge, and not one of us is missing." And why did they need atonement (viz. Ibid. 50)? For they had "feasted their eyes" on nakedness (i.e., on the Midianite women [viz. Ibid. 16]). (Ibid. 27:17) "And let the congregation of the L-rd not be as sheep without a shepherd": On this the tradition comments (Song of Songs 1:7) "Tell me (Moses), O You, whom my soul loves, etc. for why should I be covered up," as in (Jeremiah 43:12) "And he (Nevuchadnezzar) will cover up the land of Egypt, as the shepherd covers up his cloak." (Song of Songs, Ibid.) "by the flocks of Your companions" — Abraham, Isaac, and Jacob. Go out and see how the Holy One answers him (Song of Songs, Ibid. 8): "If you do not know, you fairest among the women (i.e., most exalted of the prophets), go out in the footsteps of the flock." (See) what I am destined to do for them in the end (of their "footsteps"), "and graze your kids by the tents of the shepherd" — whence it is derived that the L-rd showed Moses all the leaders who were destined to serve Israel from the day they left the desert until the resurrection. Thus, "Go out in the footsteps of the flock."