Romans 2:25-29

You trust in the covenant sign of circumcision, yet circumcision only has value if you faithfully keep the teachings of the law. But if you violate the law, you have invalidated your circumcision. And if the uncircumcised one faithfully keeps the law, won’t his obedience make him more “Jewish” than the actual rite of circumcision? And won’t the one who has never had the knife cut his foreskin be your judge when you break the law? You are not a Jew if it’s only superficial—for it’s more than the surgical cut of a knife that makes you Jewish. But you are Jewish because of the inward act of spiritual circumcision—a radical change that lays bare your heart. It’s not by the principle of the written code, but by power of the Holy Spirit. For then your praise will not come from people, but from God himself!