Some people claim that the law of God that the Israelites were given on Mount Sinai is not the same law of God that applies to Christians today, while still others claim that no law at all is relevant for Christians today. In Romans, Paul writes to a mixed congregation of Jews and Gentiles who have had problems with certain Jews saying that salvation is by the law rather than by faith in Christ. Paul makes it clear that this is not the case, but notice that he simultaneously defends the keeping of the law:
Romans 2:10-12
But glory, honor, and peace go to every man who works good, to the Jew first, and also to the Greek. For there is no partiality with God. For as many as have sinned without the law will also perish without the law. As many as have sinned under the law will be judged by the law.
Take careful consideration of what it says here: “as many as have sinned without the law will also perish without the law.”