No, of course not. It has to do whether we must keep
any day separate at all!
And what kind of "esteeming" do you think Paul was talking about?
Have you found that, in Paul's writing, he always uses exactly the same terminology for the same concepts that other passages do?
Hmm. Let's turn the prooftext knob back a few notches to "merely egregious" and look at at least a little bit of context.
The Book of the Prophet Isaiah, Chapter 66, Verses 18-24
For I know their works and their thoughts: it shall come, that I will gather all nations and tongues; and they shall come, and see my glory. And I will set a sign among them, and I will send those that escape of them unto the nations, to Tarshish, Pul, and Lud, that draw the bow, to Tubal, and Javan, to the isles afar off, that have not heard my fame, neither have seen my glory; and they shall declare my glory among the Gentiles. And they shall bring all your brethren for an offering unto the LORD out of all nations upon horses, and in chariots, and in litters, and upon mules, and upon swift beasts, to my holy mountain Jerusalem, saith the LORD, as the children of Israel bring an offering in a clean vessel into the house of the LORD. And I will also take of them for priests and for Levites, saith the LORD. For as the new heavens and the new earth, which I will make, shall remain before me, saith the LORD, so shall your seed and your name remain. And it shall come to pass, that from one new moon to another, and from one sabbath to another, shall all flesh come to worship before me, saith the LORD. And they shall go forth, and look upon the carcases of the men that have transgressed against me: for their worm shall not die, neither shall their fire be quenched; and they shall be an abhorring unto all flesh.
This does not strike me as implying continuity, but rather, a very narrow window (one week) of conversion; further, it's very poetic language, and I don't think it's justifiable to draw any conclusion more than "it happens quickly" from this.
I value the illustration of eisegesis, but I was more interested in exegesis.
I spent a bit of time looking at the Bibliolatry forum, and found it unedifying.
I think I'll stick with Paul's fairly consistent teaching of Christian liberty, rather than an elaborate jump straight into the middle of a paragraph from Isaiah and straight back without so much as a polite nod to the context.