Midrash su Geremia 43:78

“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?

Noah handed on the tradition to Shem, and he was initiated in the principle of intercalation; he intercalated the years and he was called a priest, as it is said, "And Melchizedek king of Salem… was a priest of God Most High" (Gen. 14:18). Was Shem the son of Noah a priest? But because he was the first-born, and because he ministered to his God by day and by night, therefore was he called a priest. Shem delivered the tradition to Abraham; he was initiated in the principle of intercalation and he intercalated the year, and he (also) was called priest, as it is said, "The Lord hath sworn, and will not repent, Thou art a priest for ever after the order of Melchizedek" (Ps. 110:4). Whence do we know that Shem delivered the tradition to Abraham? Because it is said, "After the order of Melchizedek" (ibid.). Abraham delivered the tradition to Isaac, and he was initiated in the principle of intercalation, and he intercalated the year after the death of our father Abraham, as it is said, "And it came to pass after the death of Abraham, that God blessed Isaac his son" (Gen. 25:11), because he had been initiated in the principle of intercalation and had intercalated the year (therefore) He blessed him with the blessing of eternity. Isaac gave to Jacob all the blessings and delivered to him the principle of intercalation. When Jacob went out of the (Holy) Land, he attempted to intercalate the year outside the (Holy) Land. The Holy One, blessed be He, said to him: Jacob! Thou hast no authority to intercalate the year outside the land (of Israel); behold, Isaac thy father is in the (Holy) Land, he will intercalate the year, as it is said, "And God appeared unto Jacob again, || when he came from Paddan-Aram, and blessed him" (Gen. 35:9). Why "again"? Because the first time He was revealed to him, He prevented him from intercalating the year outside the (Holy) Land; but when he came to the (Holy) Land the Holy One, blessed be He, said to him: Jacob ! Arise, intercalate the year, as it is said, "And God appeared unto Jacob again,… and blessed him" (ibid.), because he was initiated in the principle of the intercalation, and He blessed him (with) the blessing of the world. Thus were the Israelites wont to intercalate the year in the (Holy) Land. When they were exiled to Babylon || they intercalated the year through those who were left in the (Holy) Land. When they were all exiled and there were not any (Jews) left in the (Holy) Land, they intercalated the year in Babylon. (When) Ezra and all the community with him went (to Palestine), Ezekiel wished to intercalate the year in Babylon; (then) the Holy One, blessed be He, said to him: Ezekiel ! Thou hast no authority to intercalate the year outside the Land; behold, Israel thy brethren, they will intercalate the year, as it is said, "Son of man, when the house of Israel dwell in their own land" (Ezek. 36:17). Hence (the Sages) have said, Even when the righteous and the wise are outside the Land, and the keeper of sheep and herds are in the Land, they do not intercalate the year except through the keeper of sheep and herds in the Land. Even when prophets are outside the Land and the ignorant are in the Land they do not intercalate the year except through the ignorant who are in the land (of Israel), as it is said, "Son of man, when the house of Israel dwell in their own land"(ibid.) it is their duty to intercalate the year.

(Exod. 2:13:) WHEN HE WENT OUT ON THE SECOND DAY, HERE THERE WERE TWO HEBREW MEN FIGHTING (NTsYM). R. Abbahu said that they were emitting sparks (NYTsWTsYN) from their heels.⁹⁷Thus R. Abbahu understands the verse to read: HERE THERE WERE TWO HEBREW MEN SPARKING. (Ibid., cont.:) SO HE SAID TO THE WICKED ONE: WHY ARE YOU STRIKING YOUR NEIGHBOR? R. Isaac said: You learn from here that whoever raises his hand against his comrade is called wicked, since it is stated (ibid.): SO HE SAID TO THE WICKED ONE.⁹⁸Cf. Sanh. 58b. He said to him (in Exod. 2:14): WHO APPOINTED YOU <A PRINCE AND A JUDGE OVER US>? R. Judah b. R. Shallum the Levite said: Moses said to the Holy One: Sovereign of the World, why is this people enslaved? There are seventy nations in the world and none of them are enslaved except this nation alone. Surely this sin is known, even as written (in Exod. 2:14, cont.): SURELY THE MATTER IS KNOWN, since you were not were enslaved for nothing. What did Moses do (in Exod. 2:15)? BUT MOSES FLED FROM BEFORE PHARAOH and went into Midian <to be> with Jethro. (Prov. 22:29:) SOMEONE DILIGENT AT HIS WORK. This is Moses. (Ibid., cont.:) HE SHALL STAND BEFORE KINGS. This refers to Pharaoh. (Ibid., cont.:) HE SHALL NOT STAND BEFORE THE OBSCURE. This refers to Jethro. Thus the Holy One said to him (i.e., Moses, in Exod. 4:19): <THEN THE LORD SAID UNTO MOSES IN MIDIAN: > GO BACK TO EGYPT. Then he said to him (in Exod. 9:13): GO EARLY IN THE MORNING <TO PRESENT YOURSELF BEFORE PHARAOH>. R. Nehemiah said: See, you have made the holy profane and the profane holy. (Prov. 22:29:) HE SHALL STAND BEFORE KINGS, <i.e.,> before the Holy One; (ibid., cont.:) HE SHALL NOT STAND BEFORE THE OBSCURE (rt.: HShK). This refers to Pharaoh, as stated (in Ezek. 30:18): IN TEHAPHNEHES⁹⁹Heb.: THPNHS. Cf. Jer. 43:9, according to which Pharaoh’s house was located at THPNHS. THE DAY SHALL BE DARKENED (rt.: HShK) < WHEN I BREAK THERE THE YOKES OF EGYPT>.

(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."