Jer 31:31 Behold, the days come, says the LORD, that I will make a new covenantwith the house of Israel, and with the house of Judah:
Eze 37:19 Say unto them, Thus says the Lord GOD; Behold, I will take the stick of Joseph, which is in the hand of Ephraim, and the tribes of Israel his fellows, and will put them with him, even with the stick of Judah, and make them one stick, and they shall be one in mine hand. God establishes a “New Covenant with the House of Judah and with the House of Israel, and the two shall be made ONE in our Messiah! Has Judah and Israel been rejoined as One, and back into His land? And who is Israel? House of Israel: Gal 3:28 There is neither Jew nor Greek, there is neither bond nor free, there is neither male nor female: for ye are all one in Christ Jesus. Gal 3:29 And if ye be Christ's, then are ye Abraham's seed, and heirs according to the promise.
Jer 31:33 But this shall be the covenant that I will make with the house ofIsrael; After those days, says the LORD, I will put my law in their inward parts, and write it in their hearts; and will be their God, and they shall be my people.Jer 31:34 And they shall teach no more every man his neighbor, and every man his brother, saying, Know the LORD: for they shall all know me, from the least of them unto the greatest of them, says the LORD: for I will forgive their iniquity, and I will remember their sin no more.
Jer 32:39 And I will give them one heart, and one way, that they may fear me forever, for the good of them, and of their children after them: Jer 32:40 And I will make an everlasting covenant with them, that I will not turn away from them, to do them good; but I will put my fear in their hearts, that they shall not depart from me. Jer 32:41 Yea, I will rejoice over them to do them good, and I will plant them in this land assuredly with my whole heart and with my whole soul
Eze 36:24 For I will take you from among the heathen, and gather you (Judah and Israel) out of all countries, and will bring you into your own land. Eze 36:25 Then will I sprinkle clean water upon you, and ye shall be clean: from all your filthiness, and from all your idols, will I cleanse you. Eze 36:26 A new heart also will I give you, and a new spirit will I put within you: and I will take away the stony heart out of your flesh, and I will give you an heart of flesh. Eze 36:27 And I will put my spirit within you, and cause you to walk in my statutes, and ye shall keep my judgments, and do them.
Eze 37:13 And ye shall know that I am the LORD, when I have opened your graves, O my people, and brought you up out of your graves, Eze 37:14 And shall put my spirit in you, and ye shall live, and I shall place you in your own land: then shall ye know that I the LORD have spoken it, and performed it, says the LORD.
Eze 37:21 And say unto them, Thus says the Lord GOD; Behold, I will take the children of Israel from among the heathen, whither they be gone, and will gather them on every side, and bring them into their own land: REVELATION
Rev 21:27 And there shall in no wise enter into it anything that defiles, neither whatsoever works abomination, or makes a lie: but they which are written in the Lamb's book of life. (And “Not Blotted Out, Rev. 3:5, after Judgment)
Rev 21:7 He that overcomes shall inherit all things; and I will be his God, and he shall be my son.
God will put “His Spirit” in them, and “His Law” in their inward parts and write “His Law” in their hearts, and they (us) will “keep His judgments, AND DO THEM”! They will be placed in the land God promised. They shall inherit all things! “We will not depart from God”, don’t we now depart from God, because of our sin? God will, “remember their sins no more”! Do we still sin today? Is “Repentance” still a requirement? Isn’t this a time of “no more sin”? ... “they shall teach no more”, Do we still need “Teachers” today? Law (in Jeremiah and Ezekiel): translates Torah (the first five books of our Bibles). Do you KNOW and DO ALL that’s in the Torah perfectly today? Are there still those “in the graves”? Have we been resurrected? Have we been “Baptized by God”, cleansed with the living water, and have a “new heart” to walk perfectly with our God? Did someone, “plucked up, or thrown down” New Jerusalem?
RE: New Jerusalem
Jer 31:38 Behold, the days come, says the LORD, that the city shall be built to the LORD from the tower of Hananeel unto the gate of the corner. Jer 31:39 And the measuring line shall yet go forth over against it upon the hill Gareb, and shall compass about to Goath. Jer 31:40 And the whole valley of the dead bodies, and of the ashes, and all the fields unto the brook of Kidron, unto the corner of the horse gate toward the east, shall be holy unto the LORD; it shall not be plucked up, nor thrown down any more forever.
Eze 37:27 My tabernacle also shall be with them: yea, I will be their God, and they shall be my people. Eze 37:28 And the heathen shall know that I the LORD do sanctify Israel, when my sanctuary shall be in the midst of them for evermore.
Eze 36:35 And they shall say, This land that was desolate is become like the garden of Eden; and the waste and desolate and ruined cities are become fenced, and are inhabited.
Rev 21:10 And he carried me away in the spirit to a great and high mountain, and showed me that great city, the holy Jerusalem, descending out of heaven from God, Rev 21:22 And I saw no temple therein: for the Lord God Almighty and the Lamb are the temple of it. Rev 21:23 And the city had no need of the sun, neither of the moon, to shine in it: for the glory of God did lighten it, and the Lamb is the light thereof. Rev 21:24 And the nations of them which are saved shall walk in the light of it: and the kings of the earth do bring their glory and honor into it. Rev 21:25 And the gates of it shall not be shut at all by day: for there shall be no night there.
This (Jeremiah, Ezekiel, and Revelation) describe the “City of God, New Jerusalem”! Has New Jerusalem come down out of heaven? Do we still have a sun and a moon? Is anyone able to destroy it? The City that's FOREVER!
Heb 8:13 In that he says, A new covenant, he hath made the first old. Now that which decays and waxes old is ready to vanish away.
Has heaven and earth passed away? Is it not us and this earth that is decaying, waxing old, and ready to vanish? Will His Kingdom on earth decay or wax old or vanish?
Mat 24:35 Heaven and earth shall pass away, but my words shall not pass away.
Rev 21:1 And I saw a new heaven and a new earth: for the first heaven and the first earth were passed away; and there was no more sea.
The reason Hebrews brings up the New Covenant, decades after the Messiah had risen from the grave, is to remind us of what Jeremiah and Ezekiel were prophesying, “A New Heaven and a New Earth with a New and better Covenant and Mediator”, that we will no longer break His Covenant, and all will be fulfilled!
Heb 8:6 But now hath he obtained a more excellent ministry, by how much also he is the mediator of a better covenant, which was established upon better promises.