I don't think Grailhunter means the 10 commandments are no longer applicable, he means the Mosaic dietary laws are no longer applicable.
1. There are 613 Mosaic Laws....none of the them apply to Christians. Why?
2. The "concept of Laws" do not apply to Christianity. The "concept of Laws" failed. We live by the moral teachings of Christ and the Apostles.
3. The Mosaic Law is a body of Laws....to take ten and discard the rest would be one of the greatest sins.
Of course Christianity is a moral religion so basic morals are going to be reflected in it.
But the morality of Christ is far superior to anything in the Old Testament and needs no help or additions.
Christ warned about trying to mix Judaism and Christianity....that it would ruin both.
There is a reason why the phrase The Ten Commandments does not occur in the New Testament.
But the Laws have not been changed nor have they been abolished....they still apply to those in the Old Covenant. Christians have a New Covenant with God....But the Jews will accept Christians if they want to convert to Judaism. Do you want to be in the Old Covenant with God? No salvation in that Covenant.
The Apostle Paul had nothing good to say about the Law and explained in detail that we are not under the Law. You need to read each scripture carefully because they are very clear and powerful statements.
2nd Corinthians 3:7-8 But if the ministry of death, in letters engraved on stones, came with glory, so that the sons of Israel could not look intently at the face of Moses because of the glory of his face, fading as it was, how will the ministry of the Spirit fail to be even more with glory?
1st Corinthians 9:20 “And to the Jews I became as a Jew, that I might win Jews; to those who are under the Law, as under the Law, through not being myself under the Law, that I might win those who are under the Law;”
Romans 4:15 “for the Law brings about wrath, but where there is no law, neither is there violation.”
Romans 6:14 “For sin shall no longer be your master, because you are not under the law, but under grace.”
Romans 6:15 “What then? Are we to sin because we are not under the Law but under grace?”
Romans 8:2 “For the law of the Spirit of life in Christ Jesus hath me free from the law of sin and death.”
Romans 7:6 “But now we are released from the law, having died to that which held us captive, so that we serve in the new way of the Spirit and not in the old way of the written code.”
Romans 7:8 “But sin, taking opportunity through the commandment, produced in me coveting of every kind; for apart from the Law sin is dead.”
2nd Corinthians 3:3 “being manifested that you are a letter of Christ, cared for by us, written not with ink, but with the Spirit of the living God, not on tablets of stone, but on tablets of human hearts.”
Galatians 3:12 “Christ redeemed us from the curse of the Law, having become a curse for us.....”
This follows Paul’s statement saying You foolish Galatians, who has bewitched you….
Galatians 4:21 “Tell me, you who want to be under the law, do you not listen to the law?”
Galatians 3:10 “For all who rely on works of the law are under a curse; for it is written, “Cursed be everyone who does not abide by all things written in the Book of the Law, and do them.”
Galatians 3:24-25 “So then, the law was our guardian until Christ came, in order that we might be justified by faith. But now that faith has come, we are no longer under a guardian,”
Galatians 5:18 “But if you are led by the Spirit, you are not under the law.”
Galatians 2:16 “Yet we know that a person is not justified by works of the law but through faith in Jesus Christ, so we also have believed in Christ Jesus, in order to be justified by faith in Christ and not by works of the law, because by works of the law no one will be justified.”
Galatians 2:21 I do not nullify the grace of God, for if righteousness were through the law, then Christ died for no purpose.
Galatians 5:4 You are severed from Christ, you who would be justified by the law; you have fallen away from grace.
Hebrews 8:7 For if that first covenant had been faultless, there would have been no occasion sought for the second.
Hebrews 8:13 When He said, “A new covenant,” He has made the first obsolete. But whatever is becoming obsolete and growing old is ready to disappear.
Romans 3:20 For by works of the law no human being will be justified in his sight, since through the law comes knowledge of sin.