So what are you trying to say about the New Covenant?
Like a new contract, the NEW one REPLACES (supersedes, supplants, substitutes, changes) the OLD Covenant.
It's like when I get a NEW insurance policy for my car: things CHANGE. We have a new deductible, new rules, new regulations and I should assume NOTHING remains the same.
The OLD covenant was RULES based: Do this, don't do that, don't touch, pay this, yada, yada, yada. These rules were designed to do one thing: bring us a savior at the right time.
The NEW covenant is SPIRIT based: Love God and Love everyone else! NO RULES! If Love is your motivation, you don't need no steenking rules.
This was also prophesied about in the Old Testament and I have already presented that where it was quoted in Hebrews. But consider this next passage:
Galatians 2:17 "If, while we seek to be justified in Christ, it becomes evident that we ourselves are sinners, does that mean that Christ promotes sin? Absolutely not! 18 If I rebuild what I destroyed, I prove that I am a lawbreaker. 19 For through the law I died to the law so that I might live for God. 20I have been crucified with Christ and I no longer live, but Christ lives in me. The life I live in the body, I live by faith in the Son of God, who loved me and gave himself for me. 21 I do not set aside the grace of God, for if righteousness could be gained through the law, Christ died for nothing!" NIV
Here we have the beginnings of why the NEW covenant is superior to the OLD covenant. We are DEAD to the law. Just as if I died today, I would be FREE from all the American laws, I am now free from the Spiritual laws of the OLD covenant. Now consider this scripture:
Galatians 4:4 But when the time had fully come, God sent his Son, born of a woman, born under law, 5 to redeem those under law, that we might receive the full rights of sons. 6 Because you are sons, God sent the Spirit of his Son into our hearts, the Spirit who calls out, "Abba, Father." 7 So you are no longer a slave, but a son; and since you are a son, God has made you also an heir. NIV
You see, those who wish to be justified by following the OLD covenant (such as the Sabbath), are SLAVES. Those who accept the Spirit of Christ, which is the Spirit of God are SONS of God through faith. But you think that the "Law" referred to here is merely the Law of Moses. So, where DID Moses receive the Ten Commandments? Do you remember? Let's read on in Galatians, and we will see where THIS Law the scriptures keep referring to came from.
Galatians 4:24 These things may be taken figuratively, for the women represent two covenants. One covenant is from Mount Sinai and bears children who are to be slaves: This is Hagar. 25 Now Hagar stands for Mount Sinai in Arabia and corresponds to the present city of Jerusalem, because she is in slavery with her children. 26 But the Jerusalem that is above is free, and she is our mother. NIV
So, it's your choice: a slave under the Ten Commandments or Free under Grace. If you continue to observe ANY PART of the OLD covenant, you are obliged to observe it all! It is for FREEDOM that I have been set free, and no one will ever entrap me again.
I suggest that you read the entire book of Galatians, stem to stern, to really understand the FREEDOM that we have in Jesus. No laws. No Regulations. Just Love inspired by God's Spirit within me. No, freedom is not for everyone, and many are jealous of it. But for me, it's the only way to live!