"Forever", but you must interpret that to mean except for right now (actually for the last 2000 years or so). Correct?
Frankly I never noticed it before. It doesn't say that the sacrifice will not be interrupted, it merely states that there will be forever be a Levite to offer burnt offerings. It also seems to indicate that the burnt offerings will continue "forever".
I'm gonna have to think about that one for a while. That's why I posted the Red Heifer.
Has Yeshua reigned on David's throne for the last 2000 years? No. God's throne, yes, but that's a separate issue--David's throne is over Israel, not in Heaven. Yet, though there is a break, David's line and dynasty are preserved forever in Yeshua the Messiah, who will return and rule over Israel and the world as promised. Has that break annuled the promise? No!
Now, just because the sacrifices have been interrupted (as indeed they were about to be when Jeremiah penned this prophecy), does that mean that there are no Levites who could offer sacrifices? Not at all. They only need a proper Temple and a cleansing ceremony to begin--indeed, there is already a group that has been trained for just such service in Israel.
In other words, a pause or a delay in the fulfillment of God's promise due to Man screwing up does not annul the promise.
But just as Yeshua must someday reign forever on David's throne to fulfill God's promises to David, the Levites must someday minister before the Lord forever as well, or else the Word of God is broken. Ezekiel 40-48 describes just that happening, and even describes how the Prince (the Messiah) will participate.
Notice how far you're having to go to avoid the plain meaning of this text! You don't even offer a reasonable interpretation; only an easily-overcome objection! Who was it who said when you don't have anything on your side, just argue? Premillennial eschatology can accept that God means what He says and says what He means, but yours must constantly seek loopholes or else ignore 3/4ths of Scripture (declaring it "old") in order to preserve your traditional views!