Midrash su Ezechiele 36:17

“Remember my affliction and my anguish, wormwood and gall” (Lamentations 3:19).
“Remember my affliction and my anguish [umrudi]” – the congregation of Israel says before the Holy One blessed be He: Master of the universe, remember the afflictions with which I was afflicted, the rebellion [umrudi] that I carried out against You, and the suffering with which You sated me, “wormwood and gall.” These are expiated by those.
“You will remember, and my soul is despondent within me” (Lamentations 3:20).
“You will remember” – Rabbi Ḥiyya taught: This is analogous to a king who went out to war. His sons were with him and were provoking him. The next day, the king went out alone and his sons were not with him. The king said: If only my sons were with me, even if they would be provoking me. So too, the king is the Holy One blessed be He, and His sons are Israel. When Israel would go out to war, the Holy One blessed be He would go out with them. When they angered Him, He did not go out with them. But when Israel was no longer in the Land [of Israel], He said: If only Israel was with Me, even if they would be angering Me. We have three verses: “Would that I would be in the wilderness, in a wayfarers’ lodging place” (Jeremiah 9:1); would that My people be with Me as they were at the outset, when they were in the wilderness.⁴⁶This is expounded from the term for lodging place [melon], which is similar to the word for complaining [malinim], used to describe the Israelites’ complaints in the wilderness (see Numbers 14:27) (Etz Yosef). And it is written: “Son of man, the house of Israel dwelled in their land…” (Ezekiel 36:17).⁴⁷The verse continues: “They defiled it in their way and by their doings; their way before Me was as the impurity of a menstruating woman.” The implication is that despite the impurity, God wants them “before Me.” And this, “You will remember, and My soul is despondent within Me.”
Rabbi Yudan said: “You will remember” – I know that You remember the nations of the world.⁴⁸You remember what they did to me and You will punish them. But what can I do, “my soul is despondent within me.” The parable says: Until the fat one grows lean, the soul of the lean one expires.
“This I will reply to my heart; therefore I have hope” (Lamentations 3:21).
“This I will reply to my heart; therefore I have hope” – Rabbi Abba bar Kahana said in the name of Rabbi Yoḥanan: To what is this matter analogous? To a king who married a noblewoman and wrote for her a very substantial marriage contract, saying to her: ‘I will prepare for you such and such number of wedding canopies, and I am giving you such and such number of gowns of purple wool.’ The king left her and went to a country overseas, and he was delayed there. Her neighbors came to her and were teasing her and saying to her: ‘The king left you, went to a country overseas, and he is not going to return to you.’ She was crying and sighing. When she would enter her house, she would take her marriage contract and read it. She would see in her marriage contract: I will prepare such and such number of wedding canopies, and I am giving you such and such number of gowns of purple wool, and she would be immediately comforted. Ultimately, the king came. He said to her: ‘My daughter, I am astonished, how did you wait for me all those years?’ She said to him: ‘My lord, the king, were it not for the substantial marriage contract that you wrote and gave to me, my neighbors would have caused my demise.’ So too, idolaters provoke Israel and say to them: ‘Your God has concealed His face from You and caused His Divine Presence to depart from you. He will never return to you.’ They cry and sigh. When they enter the synagogues and study halls, read the Torah, and find that it is written: “I will turn to you, and make you fruitful.… I will place My Sanctuary in your midst.… I will walk in your midst” (Leviticus 26:9, 11–12), they are comforted. Tomorrow, when the end of the redemption comes, the Holy One blessed be He will say to Israel: ‘My children, I am astonished over you, how did you wait for Me all those years?’ They will say before Him: ‘Master of the universe, were it not for Your Torah that You gave us, the nations would have caused our demise.’ That is why it is stated: “This (zot) I will reply to my heart,” and zot is nothing other than Torah, as it is stated: “And this [vezot] is the Torah” (Deuteronomy 4:44). Likewise, David said: “Had Your Torah not been my delight, I would have perished in my affliction” (Psalms 119:92). “Therefore I have hope” in Him, and we proclaim the unity of His name twice daily and say: “Hear Israel, the Lord is our God, the Lord is one” (Deuteronomy 6:4).

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.

(Lev. 15:25:) “And when a woman has had a discharge of blood for many days.” Why a woman and not a man? Previously it applied to men and women. Thus it is stated (in Lev. 15:2), “When any man has a discharge issuing from his flesh.” R. Meir says, “The man's uncleanness was more serious than the woman's uncleanness. Why? Because the uncleanness of women is a sign of children; however, that of a man is [a sign] of suffering. Thus it is stated (in vs. 3), ‘And this shall be the uncleanness in his discharge,’³⁴The next verses (4-12) stress just how defiling his discharge really is. [i.e.] something which seals and closes.” Previously the men saw water, until Rachel arose and said (in Gen. 31:35), “for the period of women is upon me.” Then it was given to her. Therefore (in Exod. 15:25), “And when a woman has had a discharge of blood.” (Lev. 15:25:) “And when a woman has had a discharge of blood for many days.” Thus have our masters taught (in Shab. 2:6): Women die at the time of their childbirth for three transgressions:³⁵Tanh. (Buber), Gen. 2:1; Tanh., Gen. 2:1. Because they have not been careful in regard to menstruation, in regard to the hallah,³⁶I.e., the priest’s share of the dough. and in regard to the lighting of the lamp.³⁷I.e., the Sabbath lamp. Why at the time of their childbirth? Because the adversary (Satan) only makes accusations³⁸Gk.: kategorein. in time of danger. Now the three of them are from the Torah. [Where is it shown about] menstruation? (Lev. 15:25:) “And when a woman has had a discharge of her blood.” [Where is it shown about] the hallah? (Numb. 15:20:) “[You shall set aside] the first of your dough as a hallah offering.” [Where is it shown] in regard to the lighting of the [Sabbath] lamp? As our masters taught, “Where is it shown that a person is to be zealous and diligent in the lighting of the [Sabbath] lamp? Where it is stated (in Is. 58:13), ‘and you call the Sabbath a delight.’ This refers to the lighting of the lamp.” And why were [these commandments] transmitted to the woman?³⁹Gen. R. 17:8; yShab. 2:4 (5b). The Holy One, blessed be He, said, “She extinguished the lamp of the world….” In regard to menstruation, the Holy One, blessed be He, said, “She shed the blood of Adam, and she was sentenced to have her own blood shed, since it is stated (in Gen. 9:6), ‘Whoever sheds human blood [by a human will his blood be shed].’ She shall observe her menstrual period to atone for the blood that she shed.” Ergo (in Lev. 15:25), “And when a woman has had a discharge of blood.” Therefore, the Holy One, blessed be He, compares the uncleanness of Israel to the uncleanness of the menstrual period, when [a woman] is unclean and [then] purified. So the Holy One, blessed be He, is going to purify Israel, as stated (in Ezek. 36:25), “I will sprinkle pure water upon you, and you shall be pure.” Another interpretation: (Ezek. 36:17:) “Their way before Me was like the uncleanness of a menstruant woman”; like the uncleanness of a menstruant woman, and not like the uncleanness of a corpse. With a corpse in the house, a high priest does not enter there; but in the case of a menstruant woman, a high priest enters into the house with her and sits [with her] on the couch,⁴⁰‘YSTWW’, probably from the Gk.: histion, which means “something woven.” but on condition that it not shake (when they sit on it). So if Israel were compared to the impurity of death, the Divine Presence would never return upon them; however, they are compared to the menstruant because there is cleansing for her in a mikveh, so that the priest may be with her in the house and not be afraid. Thus the Divine Presence dwells with Israel, even though they are unclean, as stated (in Lev. 16:16), “which dwells with them in the midst of their uncleannesses.” R. Levy said, “When Israel was in Egypt, the women did not see menstrual blood, because the fear of Egypt was upon them. And also after Israel left Egypt, they did not see menstruation in the desert, because the Divine Presence was among them.” [Moreover,] the women accepted the Torah first. It is so stated (in Exod. 19:3), “Thus shall you say to the House of Jacob,” these are the women;⁴¹Exod. R. 28:2. Cf. Shab. 118b: “R. Jose said, ‘… but my wife [I called] my house.’” (ibid., cont.), “and declare to the sons of Israel,” these are the men. And so it says (in Cant. 6:10), “terrible⁴²Buber, n. 91, points out that ‘ayummah (TERRIBLE) is seen as related to ‘emah (“fear”), in that the fear of the Divine Presence was upon them. like bannered hosts.” Now about them it is stated (in Cant. 4:12), “A locked garden is my sister, my bride, a locked fountain, a sealed spring.” The Holy One, blessed be He, said to Israel, “In this world you became clean but returned to uncleanness; but in the world to come I Myself will cleanse you so that you shall not ever become unclean.” Thus it is stated (in Ezek. 36:25), “I will sprinkle pure water upon you, and you shall be pure; I will purify you from all your uncleannesses and from all your idols.”