Proof texting from the Bible by taking one or two verses out of context leads to false doctrines.
Romans 3:19-20
19 Now we know that whatever the Law says, it speaks to those who are under the Law, that every mouth may be closed, and all the world may become accountable to God; 20 because by the works of the Law no flesh will be justified in His sight; for through the Law comes the knowledge of sin.
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Romans 3:27-30
27 Where then is boasting? It is excluded. By what kind of law? Of works? No, but by a law of faith. 28 For we maintain that a man is justified by faith apart from works of the Law. 29 Or is God the God of Jews only? Is He not the God of Gentiles also? Yes, of Gentiles also, 30 since indeed God who will justify the circumcised by faith and the uncircumcised through faith is one.
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Galatians 3:23-25
23 But before faith came, we were kept in custody under the law, being shut up to the faith which was later to be revealed. 24 Therefore the Law has become our tutor to lead us to Christ, that we may be justified by faith. 25 But now that faith has come, we are no longer under a tutor.
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I will again ask it you have really studied the NT since you are advocating salvation through works of the law not through the law of faith since the 10 Commandments are part of the Law.