Midrash su Geremia 43:12

“Tell me, he whom my soul loves, where do you herd, where do you rest your flock at noon? Why should I be as one bound to the flocks of your companions” (Song of Songs 1:7).
“Tell me, he whom my soul loves,” Rabbi Yehuda bar Rabbi Simon interpreted the verse regarding Moses. When the Holy One blessed be He said to him: “Now go and I will send you to Pharaoh” (Exodus 3:10), he said to Him: ‘Master of the universe, through me, my Lord, can all these things be accomplished?²²¹“Through me [bi], Lord,” is a play on the phrase “Please [bi] my Lord” (Exodus 4:13). How can I stand before all these multitudes? How many new mothers are there among them? How many pregnant women are there among them? How many small children are there among them? How many kinds of hearty food have You prepared for the new mothers among them? How many kinds of soft foods have You prepared for the pregnant women among them? How much roasted grain and how many nuts have You prepared for the small children among them?’ Where is this matter articulated?²²²Where is it articulated that Moses’ claim to God was that he would not be able to properly care for the children of Israel? Here: “Tell me, he whom my soul loves”—the nation that my soul loves, the nation for whom I put my soul on the line; “where do you herd”—during the summer; “where do you rest your flock at noon”—during the rainy season. “Why should I be as one bound [keoteya],” Rabbi Ḥelbo said in the name of Rabbi Huna: Let me not be like this mourner who covers [oteh] until his upper lip and weeps, just as you say: “And he shall cover until his upper lip” (Leviticus 13:45).
Another matter, “Why should I be as one bound,” let me not be like this shepherd that wolves infiltrated his flock and mauled it, and he wrapped his garment and departed, just as it says: “He will wrap the land of Egypt” (Jeremiah 43:12). “To the flocks of your companions,” when I [Moses] go to Your companions²²³This is a reference to the patriarchs. and they ask me about their flocks, what will I respond to them?

(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."