Tell me where the NY says that the law applies to Gentiles.
Acts 15:5-10
But some believers from the party of the Pharisees stood up and declared, “The Gentiles must be circumcised and required to obey the law of Moses.” So the apostles and elders met to look into this matter.
After much discussion, Peter got up and said to them, “Brothers, you know that in the early days God made a choice among you that the Gentiles would hear from my lips the message of the gospel and believe. And God, who knows the heart, showed His approval by giving the Holy Spirit to them, just as He did to us. He made no distinction between us and them, for He cleansed their hearts by faith.
Now then, why do you test God by placing on the necks of the disciples a yoke that neither we nor our fathers have been able to bear? On the contrary, we believe it is through the grace of the Lord Jesus that we are saved, just as they are.”
19-21
It is my judgment, therefore, that we should not cause trouble for the Gentiles who are turning to God. Instead, we should write and tell them to abstain from food polluted by idols, from sexual immorality, from the meat of strangled animals, and from blood. For Moses has been proclaimed in every city from ancient times and is read in the synagogues on every Sabbath.”
You should take Peter's advice to heart. If you want to observe Jewish law, by all means become a Jew. If you are a Christian, you have no business trying to force Jewish law on other Christians. If you are a Jew, you have no business trying to persuade Christians to desert grace and come under Jewish law.