But we still don’t follow the OT to the letter, do we?
If you read Romans 2;17-29
17
7 Now if you call yourself a Jew and rely on the law and boast of God 18 and know his will and are able to discern what is important since you are instructed from the law, 19 and if you are confident that you are a guide for the blind and a light for those in darkness, 20 that you are a trainer of the foolish and teacher of the simple, because in the law you have the formulation of knowledge and truth-- 21 then you who teach another, are you failing to teach yourself? You who preach against stealing, do you steal? 22 You who forbid adultery, do you commit adultery? You who detest idols, do you rob temples? 23 You who boast of the law, do you dishonor God by breaking the law? 24 For, as it is written, “Because of you the name of God is reviled among the Gentiles.”
8 25 Circumcision, to be sure, has value if you observe the law; but if you break the law, your circumcision has become uncircumcision. 26 Again, if an uncircumcised man keeps the precepts of the law, will he not be considered circumcised? 27 Indeed, those who are physically uncircumcised but carry out the law will pass judgment on you, with your written law and circumcision, who break the law. 28 One is not a Jew outwardly. True circumcision is not outward, in the flesh. 29 Rather, one is a Jew inwardly, and circumcision is of the heart, in the spirit, not the letter; his praise is not from human beings but from God.
7 [17-29] Mere possession of laws is no evidence of virtue. By eliminating circumcision as an elitist moral sign, Paul clears away the last obstacle to his presentation of justification through faith without claims based on the receipt of circumcision and its attendant legal obligations.
usccb.org/nab/bible/romans/romans2.htm