Your Hyper-dispensationalism is showing again. You cannot salami-slice the word of God in such a way as to negate the words of Christ. Nor can you set Paul against Christ.Unfortunately you seem to have the wrong idea what liberty in Christ means. I see that all of our verses boosting your Sabbath position are either from the Old Testament or from the Gospels - all before the beginning of the New Covenant. You cannot find a single verse from New Testament writers suggesting, let alone mandating, that the Sabbath still needs to be observed.
No, this is Christian liberty. 'And I shall walk in liberty, for I seek Your precepts' (Psalms 119:45). It is the one who is saved by grace, who is no longer under the law as a covenant of works who can say, 'Oh how I love Your law! It is my meditation all the day!' It was the realisation that the writer of Psalm 119 was a man saved by grace that convinced me of the continuance of the moral law. Christian liberty is Paul describing himself as a bondservant or slave of Jesus Christ, whom to serve is perfect freedom. 'For this is the love of God, that we keep His commandments, And His commandments are not burdensome' (1 John 5:3). Whether someone observes Good Friday or Christmas Day is a matter of freedom since there is no commandment to observe either. The Lord's Day is a command of God, placed almost in the middle of the Decalogue. It is no longer part of the Old Covenant which has long since passed away, for it pre-dates it. It remains part of God's eternal and abiding moral law.This is Christian liberty:
One person regards one day above another,
another regards every day alike.
Each person must be fully convinced in his own mind.
He who observes the day, observes it for the Lord,
and he who eats, does so for the Lord, for he gives thanks to God;
and he who eats not, for the Lord he does not eat, and gives thanks to God. - Rom. 14:5-6
This is Christian liberty:
Let no man therefore judge you in meat, or in drink, or in respect of an holyday, or of the new moon, or of the sabbath days: Col. 2:16
This is Christian liberty:
But now we have been released from the Law, having died to that by which we were bound, so that we serve in newness of the Spirit and not in oldness of the letter. Rom. 7:6
Also:
But one who looks intently at the perfect law, the law of liberty, and abides by it, not having become a forgetful hearer but an effectual doer, this man will be blessed in what he does. James 1:25
I think I have said all I wish to say on this matter. I will give an exposition of 1 Timothy 1:8-11 tomorrow morning (DV), and then I'm finished on this thread.