"Jer. 33:15-22"
It doesn't say the the "branch" is drawn from the Priestly Levites, only that there shall not be "no want of such a man before me to offer burnt offerings and to kindle meat offering and to do offerings continually.
Now why should there be no want of a man to do these offerings and to be a son of David upon the throne...both eternal high priest and King? Because Jesus..the Living son of God and God in flesh alive from creation's inception and before then...is our High priest and King! No more Levites are needed...he is our Living Sacrifice, our meat offering broken for us and our blood drink offering poured out for us. Levites offered temporary covering for sins via animal sacrifice...it is He that purifies the Levites in Malachi3:3 so that they offer unto the Lord an "offering in Righteousness" and by extension to all men!
Read Malachi chapter 3 in relation to Jeremiah 33 and the whole plan of salvation literally comes alive right before your eyes!
What it says specifically is that just as David will never lack a man on his throne, that being the immortal Yeshua HaMashiach, "nor shall the priests the Levites lack a man before Me to offer burnt offerings, and to kindle grain offerings, and to do sacrifice forever . . ." and just as the covenant with David will never be broken, nor shall "My covenant with the Levites the priests, My ministers." See Num. 25:10-13 to see which Levitical covenant God is talking about. The plural term used--"priests," not "priest"--mean that more than just the Messiah is in view here.
In the Millennium and beyond, the Levites will continue to be priests, with Yeshua as the High Priest. This is the only way to reconcile the above promises with Heb. 8-10 and Ezk. 40-48.
Levites offered temporary covering for sins via animal sacrifice...
Actually, according to Hebrews 9:13ff and 10:3, the animal sacrifice only "sanctifies to the (ceremonial) purifying of the flesh" and serve as "remembrance again of sins every year." Indeed, "it is not possible that the blood of bulls and of goats should take away sins" (v. 4). They could only cover (Heb. kapparah, to atone) the sins until the time to completely take them away by punishing them in the person of the Messiah had come.
In the Millennium, they will still stand the ceremonial purpose of purifying the flesh (which the author of Hebrews uses the present tense to indicate they still did in his or her own day, post-Cross) and reminding people of the price of sin (which seems necessary to me in light of a yet fallen man--those not taken in the Second Coming/Rapture--living in near-Edenic conditions). They will serve the latter purpose even before them, in the End Times.
it is He that purifies the Levites in Malachi3:3 so that they offer unto the Lord an "offering in Righteousness" and by extension to all men!
Exactly. Nevertheless, Sha'ul still calls the End Time Temple "the Temple of God," so we must be very careful about calling it evil or assuming that God rejects it. Rather, He permits it, even with an imperfect service, as a part of seeing to the redemption of all Israel.
I don't think we're really in any essential disagreement here. Rather, we seem to be looking at the same thing from two slightly different angles.
God bless.