The Jew is the one who is a Jew inwardly, and circumcision is of the heart—by the Spirit, not by the letter. Such a person’s praise comes not from people but from God.
In context
27The one who is physically uncircumcised and yet fulfills the law will judge you, who have the letter and the circumcision and still break the law. 28For no one is a Jew who is one on the surface, and circumcision is not what is done on the surface, in the flesh. 29The Jew is the one who is a Jew inwardly, and circumcision is of the heart—by the Spirit, not by the letter. Such a person’s praise comes not from people but from God.