Yes, those are what was stated in Colossians 2:14, the handwriting ordinances not the fingerwritten Law of God. The Sabbath is the fourth in God's law and was never called as against us or contrary to us.You’re right that all Scripture is God-breathed. But you’re missing how Scripture itself tells you to read Scripture.
2 Timothy 3:16 does not mean every Old Testament command stays binding the same way after Christ. If that were true, you would still be offering sacrifices, keeping dietary laws, and observing every ordinance given to Israel. But Scripture itself says those things were fulfilled.
The fulfillment of what Isaiah state about God's plan to make new heavens and new earth was not yet done, as the LORD said, "which I will make." Where all mankind will worship God from one Sabbath to another.The issue is not whether Isaiah is true. The issue is how Isaiah is fulfilled.
And it was also shown to John where God said, "I make all things new," as he had seen the new heavens and new earth in verse 1.
Isa 66:22 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.
Rev 21:5 And he that sat upon the throne said, Behold, I make all things new. And he said unto me, Write: for these words are true and faithful.
Apostle Paul was a later convert, nothing that we can find that understanding when Jesus was still alive as the early believers were still keeping the Sabbath according to the Commandments.You’re isolating Isaiah 66 and reading it without the light of the New Testament that explains it.
God already told you what Sabbaths were:
“Let no man therefore judge you… in respect of… the sabbath days: which are a shadow of things to come; but the body is of Christ” ~Colossians 2:16–17
As you state in your Post#11 that early believers kept still the Sabbath "before the resurrection, as still under the old covenant."
Here, this happened long after Jesus resurrection, apostle Paul and Barnabas were begged by Antioch listeners that things would be spoken to them the next Sabbath. If the understanding that the Sabbath was change to Sunday, the day after the Sabbath is Sunday, why wait for another Sabbath if Sunday is the new worship day? And verse 44, nearly the whole city assembled to hear the word of the Lord.
Apostle Paul wrote Colossians 2:16,17, but still do the preaching every Sabbath.
I believe apostle Paul didn't mean what you mean to what he had written.
Act 13:42 As Paul and Barnabas were going out, the people kept begging that these things might be spoken to them the next Sabbath.
Act 13:43 Now when the meeting of the synagogue had broken up, many of the Jews and of the God-fearing proselytes followed Paul and Barnabas, who, speaking to them, were urging them to continue in the grace of God.
Act 13:44 The next Sabbath nearly the whole city assembled to hear the word of the Lord.
Again, I believe apostle Paul didn't mean what you mean as he still do the preaching in Acts 1:42-44 every Sabbath. If the changed was already instituted after Jesus resurrection, he should have made his preaching on Sunday, and follow what he said in Colossians like what you mean.That is not talking only about “handwriting ordinances.” It explicitly says sabbath days. You cannot remove that word from the text to protect your conclusion.
And when did God ceased from His work? Verse 4 made it clear.Hebrews makes it even clearer. The old system was temporary:
“For the law having a shadow of good things to come, and not the very image of the things…” ~Hebrews 10:1
And then it tells you what the real rest is:
“There remaineth therefore a rest to the people of God… For he that is entered into his rest, he also hath ceased from his own works” ~Hebrews 4:9–10
Heb 4:4 for He spoke in a certain place concerning the seventh day thus: “And God rested in the seventh day from all His works”;
Worship can be done anywhere, besides Isaiah didn't mentioned that all mankind must worship God in a specific location.The rest is not a weekly day. The rest is Christ.
Now look at the new heavens and new earth you’re pointing to.
Revelation does not describe a return to weekly cycles or temple systems. It says, “I saw no temple therein: for the Lord God Almighty and the Lamb are the temple of it” ~Revelation 21:22.
That matters. No temple. No system. No shadows. Just God Himself.
Act 16:13 And on the Sabbath day we went outside the gate to a riverside, where we were supposing that there would be a place of prayer; and we sat down and began speaking to the women who had assembled.
The "from one new moon to another" phrase would be sufficient to understand as continual in a month.So when Isaiah says “from sabbath to sabbath,” he is using language they understood to describe continual, unbroken worship. Not a reinstated calendar law.
But the text speak of "from one new moon to another, and from one Sabbath to another," it implied weekly.
As from the first day of the month as Sabbath, next seventh day as Sabbath, next and next until another new moon (first day of the month Sabbath.)
Isa 66:23 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.
If you have the same understanding with apostle Paul about the "shadows" he should have abide to what you explained, but there are many Bible verses that apostle Paul preached every Sabbath instead of Sunday long after Jesus resurrection.You’re taking prophetic language and turning it into a legal requirement that the New Testament already fulfilled and set in its proper place.
Scripture does not contradict itself.
If you say Sabbaths continue as binding law in the future, you are directly opposing what God already said about them being shadows fulfilled in Christ.
The future is not a return to shadows.
The future is the fullness of what the shadows pointed to.