28 A person is not a Jew who is one only outwardly, nor is circumcision merely outward and physical.

Read Romans 2:28 Using Other Translations

For he is not a Jew, which is one outwardly; neither is that circumcision, which is outward in the flesh:
For no one is a Jew who is merely one outwardly, nor is circumcision outward and physical.
For you are not a true Jew just because you were born of Jewish parents or because you have gone through the ceremony of circumcision.