You have bought the hebrew roots nonsense full blast. Did Marcion write the book of hebrews?:
Hebrews 8:13 In that he saith, A new covenant, he hath made the first old. Now that which decayeth and waxeth old is ready to vanish away.
Hebrews 8:6-9 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.
For if that first covenant had been faultless, then should no place have been sought for the second.
For finding fault with them, he saith, Behold, the days come, saith the Lord, when I will make a new covenant with the house of Israel and with the house of Judah:
Not according to the covenant that I made with their fathers in the day when I took them by the hand to lead them out of the land of Egypt; because they continued not in my covenant, and I regarded them not, saith the Lord.
No Marcion did not write Hebrew and yes Marcion is the reason "nt" and "OT" are seperated, nobody did it before him...
I fully understand what the blood of Messiah brings and is explained in Hebrews, I also read the entore word and gather my understanding from it in fulness...
Hebrews 7:11-12, “Now if perfection had been attainable through the Levitical priesthood (for under it the people received the law), what further need would there have been for another priest to arise after the order of Melchizedek, rather than one named after the order of Aaron? For the priesthood being changed (#G3331), there is made of necessity a change (#G3346) also of the law.”
Notice it is the same word in English “change” but in the Greek they are 2 different words?
“For the priesthood being changed (#G3331), there is made of necessity a change (#G3346) also of the law.”
If we only look at the English it is easy to misunderstand what the writer of Hebrews is seeking to tell us. Lets take a deeper look at the difference between these words:
“For the priesthood being changed (#G3331)”
“changed” is word #G3331 μετάθεσις metathesis (me-ta'-the-sis) n., transposition, i.e. transferral (to heaven), disestablishment (of a law). [from G3346], KJV: change, removing, translation, Root(s): G3346
Greek Word Study (Transliteration-Pronunciation Etymology & Grammar)
#G3331 μετάθεσις metathesis; 1) transfer: from one place to another 2) to change 2a) of things instituted or established
As in the priesthood on earth, the Levite priesthood has been abolished, and the Priesthood in the heavens, carried out by Yahshua is established. This “change” or “metathesis” is a removal of one that is replaced by another.
“there is made of necessity a change (#G3346) also of the law.”
Thayer's (New Testament Greek-English Lexicon)
From G3346; transposition, that is, transferral (to heaven), disestablishment (of a law):—change, removing, translation.
“change” is word #G3346 μετατίθημι metatithemi (me-ta-tiy'-thee-miy) v., 1. to transfer., 2. (literally) to transport., 3. (by implication) to exchange., 4. (reflexively) to change sides. [from G3326 and G5087], KJV: carry over, change, remove, translate, turn, Root(s): G3326, G5087
Greek Word Study (Transliteration-Pronunciation Etymology & Grammar)
#G3346 μετατίθημι metatithemi; 1) to transpose (two things, one of which is put in place of the other) 1a) to transfer 1b) to change 1c) to transfer one's self or suffer one's self to be transferred 1c1) to go or pass over 1c2) to fall away or desert from one person or thing to another
Thayer's (New Testament Greek-English Lexicon)
#G3346 μετατίθημι metatithemi; From G3326 and G5087; to transfer, that is, (literally) transport, (by implication) exchange, (reflexively) change sides, or (figuratively) pervert:—carry over, change, remove, translate, turn.
As in the Law has been transferred, not mediated by Levites but mediated by Yahshua the High Priest. This “change” or “metatithemi” is a transferral.
John/Yahanan 14:6, “Yahshua proclaimed to him: I am the way, the truth, and the life; no man comes to the Father, except through Me.”
Hebrews 7:24-25,"but He, because He remains forever, has an unchangeable priesthood. Therefore He is also able to save completely those who draw near to יהוה through Him, ever living to make intercession for them."
If you looked at eveything I posted rather than only focusing on one part you would see the COvenant was made with Abraham and continued to Israyl - Ps 105, and the covenant in the blood of Messiah is with Israyl Jre 31 and Heb 10. Then consider metathesis and metatithemi, neos, kainos, chadash... to him who seeks....