Midrash sa Ezekiel 36:23: Pirkei DeRabbi Eliezer & Bamidbar Rabbah

The Chajjôth stand next to the throne of His glory and they do not know the place of His glory. The Chajjôth stand in awe and dread, in fear and trembling, and from the perspiration of their faces a river of fire arises and goes forth before Him, as it is said, "A fiery stream issued and came forth from before him…"(Dan. 7:10). And the wings of Gallizur the angel, who stands next to the Chajjôth, (are spread forth) so that the fire which consumes the fire of the angels should not burn (them). Two Seraphim stand, one on His right and one on His left, each one has six wings, with twain they cover their face so as not to behold the presence of the Shekhinah, with twain they cover their feet so that they should not be seen before the presence of the Shekhinah, || so that the standing of the foot of the calf might be forgotten. With twain do they fly, praising and reverencing, and they sanctify. One answers and another calls, one calls and another answers, and they say, "Holy, Holy, Holy, is the Lord of Hosts; the whole earth is full of his glory" (Isa. 6:3).

“The Kehatite,” that is what is written: “For My name's sake, I will defer My wrath and for My praise, I will exercise forbearance with you, so as not to eradicate you” (Isaiah 48:9). It is speaking of Israel. “For My name's sake, I will defer My wrath,” this is Israel, upon whom the Holy One blessed be He designated His name: “I am the Lord your God” (Exodus 20:2). And He joined His name¹⁰El. with their name, Israel. That is why He deferred His wrath against Israel, that He did not eliminate them, but rather, He collected from them¹¹He punished them. little by little in exile in order to absolve them. He did not seek to eradicate them, so his name would not be desecrated because of them. As we find when Israel was in Egypt, they rebelled against the Holy One blessed be He and the Holy One blessed be He wished to eliminate them, but He deferred His wrath with them for His name’s sake and did not do so, just as it says: “I said to pour My fury upon them, to spend My wrath upon them within the land of Egypt. But I acted for My name’s sake, so that it would not be profaned before the eyes of the nations” (Ezekiel 20:8–9). Likewise, when Israel departed, in the wilderness they rebelled against Him, and the Holy One blessed be He sought to eradicate them but He deferred His wrath with them for His name’s sake, as it is stated: “I said to pour My fury upon them [in the wilderness to eradicate them. But I acted for My name’s sake, so that it would not be profaned before the eyes of the nations…]” (Ezekiel 20:13–14). Likewise, the generation of the wilderness rebelled against the Holy One blessed be He and He sought to eradicate them, but He deferred His wrath with them for His name’s sake, and He took an oath that He would exact retribution against them with the servitude of the kingdoms, but he did not effect eradication, as it is stated: “I said I would pour My fury [upon them…in the wilderness]. But I restrained My hand, [and I acted for the sake of My name, that it not be profaned]” (Ezekiel 20:21–22). “I also raised My hand [to them in the wilderness, to disperse them among the nations and to scatter them through the lands]” (Ezekiel 20:23). “For My praise, I will exercise forbearance with you” (Isaiah 48:9), so that the name of the Holy One blessed be He will not be profaned through them; He will bring them the sealed redemption, as it is stated: “I will sanctify My great name that was profaned among the nations… I will take you from the nations…[and I will bring you to your land]” (Ezekiel 36:23–24).
Another matter, “I will exercise forbearance [oḥotam] with you” (Isaiah 48:9), because Israel was created to recite the praise of the Holy One blessed be He, just as it says: “This people, I formed for Myself; [they will recite My praise]” (Isaiah 43:21). For that purpose, so that His name would be praised in their midst, the Holy One blessed be He seals it [ḥotma] for good. Just as it says: “Place me as a seal [hotam] upon your heart, as a seal upon your arm” (Song of Songs 8:6). That caused them not to be eliminated in exile. That is, “so as not to eradicate you.”
Another matter, “for My name's sake, I will defer My wrath” (Isaiah 48:9), it is speaking of the Kehatites [hakehati]. To what is the matter comparable? It is to a king who had a son who joined robbers. They were apprehended and his son was apprehended with them. The king said: ‘What shall I do? Shall I execute the robbers? That is impossible, as my son is with them. For the sake of my son, I will free them now.’ So, the Levites were the bearers of the Tabernacle. The Holy One blessed be He was looking at Koraḥ and his congregation, who were destined to dispute with Moses and Aaron. The Holy One blessed be He said: ‘What shall I do to these? To kill them now is impossible, as they are intermingled with the other righteous ones.’ So as not to harm all of them with the attribute of justice, the Holy One blessed be He took half His name, and added ya [yod heh] to it [the word kehat], the Holy One blessed be He rendered it hakehati, heh at the beginning and yod at the end, that is ya, in order to provide them with protection until their day would come. That is, “for My name's sake, I will defer My wrath…” That is why hakehati is written here.

THE NEW HEAVENS AND EARTH
RABBAN GAMALIEL said: Just as the New Moons are renewed and sanctified in this world, so will Israel be sanctified and renewed in the future world just like the New Moons, as it is said, "Speak unto all the congregation of the children of Israel, and say unto them, Ye shall be holy: for I the Lord your God am holy" (Lev. 19:2). The sages say: The heavens and the earth are destined to pass away and to be renewed. What is written concerning them? "And all the host of the heaven shall be dissolved, and the heavens shall be rolled together as a scroll" (Isa. 34:4). Just as when a man reads in a scroll of the Torah and he rolls it, and again he opens it to read therein and he rolls it (together), likewise in the future will the Holy One, blessed be He, roll together the heavens like a scroll, as it is said, "And the heavens shall be rolled together as a scroll" (ibid.); "And the earth shall wax old like a garment" (Isa. 51:6); just as a man spreads out his garment and folds it up, and again he unfolds it || and puts it on and renews it (thereby), likewise the Holy One, blessed be He, in the future will fold up the earth and again will He spread it out and put it in its place like a garment, as it is said. "And the earth shall wax old like a garment" (ibid.).