@SabbathBlessings
@Major1
This is why the argument from that text is not that convincing. And that is what Major1 was letting folks know in his own wording by saying it doesn't relate to now, but to eternity.
I agree we may well come before the Lord to worship on Sabbath and the New Moon on the new earth. And I have no issue with that at all as the Jewish Christian believers went on keeping the law. We see reference to Paul wanting to be back in Jerusalem by Pentecost, etc. These laws were not destroyed, but fulfilled in Christ.
Now the issue is that you do not treat the New Moon and Sabbath the same currently. So the notion of something being done in the hereafter meaning that it should be done now does not seem to hold true.
That does not in any way rule out other arguments from the text in favor of Sabbath observance. And the new moon is certainly different, and less prominent than the Sabbath in any case, which we agree upon. Especially since there is no clear command to observe the new moon. But you will have to make your argument on those other texts if you wish to be convincing. Because the "do it in the new earth = do it now" argument is clearly not accurate based on your handling of the two elements listed. You don't in fact do now what you now seem to acknowledge may be done in the new earth.
The emphasis placed on this text for Sabbatarian arguments is misplaced, in my view, because there is glaring inconsistency in how Adventist handle the elements. On the other hand, for Messianics I suppose it would be consistent.
And as you note below, the whole scenario is seen as an unfulfilled possibility by Adventists themselves.
The reason this text is used it because on its face it seems plain. We will observe the Sabbath in the new earth. But when you look at the details it is not plain.
And when, as happens too frequently, Adventists omit the first part of the verse referencing the new moon, it comes across as deceptive argument when people become aware of the larger context. Such polemical usage without looking at the context is counterproductive with those who go and read the full text.
I noted the timing problem in an earlier post. The new heavens and new earth follow the 1k years in Revelation.