Let me explain a little deeper. The characteristics and the behaviors that that the ten commandments DEFINE fall outside of any covenant. These characteristics and behaviors were codified and incorporated into the covenants. They would exist even if no covenants were ever struck.
Jesus didn't come to destroy the law, but to fulfill it, and He did fulfill it. He also came to set us free from the law. Paul, in Romans clearly establishes that we died to the law, and uses the tenth commandment as his example.
"Law" is used in many contexts in the new testament. Much of the time when Paul is discussing the "law" he is referring to the manmade body of rules and regulations that were invented under the Jewish religious system. Other times he is talking about following the laws of God for salvation instead of accepting the sacrifice of Christ.
Rom 13:9 For this, Thou shalt not commit adultery, Thou shalt not kill, Thou shalt not steal, Thou shalt not bear false witness, Thou shalt not covet; and if there be any other commandment, it is briefly comprehended in this saying, namely, Thou shalt love thy neighbor as thyself.
Rom 13:10 Love worketh no ill to his neighbor: therefore love is the fulfilling of the law.
In the verses above, Paul is saying that allowing the love of Christ to live in and through us WILL conform us to God's law. The commandments he listed ARE the written definition of what Godly love toward others should APPEAR in your physical and spiritual life as.
Those who cling to the ten commandments do so in ignorance of New Testament commandments.
The purpose of the ten commandments is to show us our sin. When our live is continually in violation of the commandments, then we know we are not allowing the spirit of God to work in and through us:
Rom 7:7 What shall we say then? Is the law sin? God forbid. Nay, I had not known sin, but by the law: for I had not known lust, except the law had said, Thou shalt not covet.
In other words, Paul would not have recognized that he had been committing the sin of coveting unless he had been instructed that coveting was indeed a sin. The ten commandments are the benchmark, the standard, the example, the apex of Christian morality.
You are twisting scripture for your own purposes. In Romans, when Paul was speaking of our freedom from the law, he clearly referenced God’s law, not man’s.
"..., I would not have known sin except through the law. For I would not have known covetousness unless the law had said, "You shall not covet."" Romans 7:7
The verse, “You shall not covet” is the tenth commandment. Paul describes this verse as an example of “the law”. In Romans 7:6, Paul says, “we have been delivered from the law.” Another passage that shows the 10 commandments are obsolete begins in Hebrews 8:13;
In that He says, "A new covenant," He has made the first obsolete. Now what is becoming obsolete and growing old is ready to vanish away. Then indeed, even the first covenant had ordinances of divine service and the earthly sanctuary. For a tabernacle was prepared: the first part, in which was the lampstand, the table, and the showbread, which is called the sanctuary; and behind the second veil, the part of the tabernacle which is called the Holiest of All, which had the golden censer and the ark of the covenant overlaid on all sides with gold, in which were the golden pot that had the manna, Aaron's rod that budded, and the tablets of the covenant;” Hebrews 8:13 – 9:14.
In his description of the first covenant, which the author just described as obsolete, are the tablets of the covenant. The 10 Commandments were the tablets of the first covenant, which is not obsolete.
The law was a tutor to lead us sinners to Christ, but Galatians 3:24-25 says,
"Therefore the law was our tutor to bring us to Christ, that we might be justified by faith. But after faith has come, we are no longer under a tutor."
It goes on to say that those who want to be under the law are under a curse.
Hardly. Jesus gave us a new commandment in John 13:34, because the old commandments were insufficient for the new creation, the church.
Our new covenant has new commandments.
• 1 Cor 7 gives us a new "commandment of the Lord", dealing with divorce that are distinctly different from the Old Testament law dealing with divorce.
• 1 Cor 14:37 presents a new "commandment of the Lord" dealing with how the church should function when gathered together.
• Acts 17:30 presents a new command when it says, “.. These times of ignorance God overlooked, but now commands all men everywhere to repent...” (again proving the Ten Commandments weren't directed at all men.)
• 1 John 3:22 says “This is His commandment: that we should believe on the name of His Son Jesus Christ and love one another, as He gave us commandment. The first part is obviously a commandment of the new covenant.
• Jesus calls His command in John 13:34 a “new” commandment. It refers to “one another” to require love within the church, which is a new creation, distinctly different from loving your neighbor. 2 John 5 says, “And now I plead with you, lady, not as though I wrote a new commandment to you, but that which we have had from the beginning: that we love one another. This is love, that we walk according to His commandments. This is the commandment, that as you have heard from the beginning, you should walk in it.” The ‘beginning’ doesn’t refer to the law of Moses, but to the beginning of the church.
• Peter, in Acts 15, says, “Now therefore, why do you test God by putting a yoke on the neck of the disciples which neither our fathers nor we were able to bear?” The law is referred to as a yoke the fathers couldn’t bear, and argues that the Gentile church shouldn’t be similarly burdened. Yet, 1 John 5:3 says of the (new) commandments, “And His commandments are not burdensome.” The old was a yoke and burden, but the new are not. A distinct difference. If not, then Peter wouldn’t have argued to keep the law from the Gentiles in Acts 15.
Galatians says the same thing. “For these are the two covenants: the one from Mount Sinai which gives birth to bondage.” The law is “bondage.” There are commandments contained in the old covenant, and commands in the new covenant. Similarity doesn’t imply both are still in effect.
The United States incorporated a large sections of English law, but we are free from English law. Yet we are subject to the spirit of the English laws because they are contained in the U.S. laws. The authority over us now comes from the U.S. laws. We are a new creation, under a new covenant, and new commandments.
The spirit of the OT commands (not the letter) are contained in the NT commands, and we should use the NT commands for guidance.