Romans 2:29
but he is a Jew who is one inwardly, and circumcision is that of the heart, in the spirit, not in the letter; whose praise is not from men, but from God.
World English Bible (Public Domain)
In context
Before · Romans 2:27–28
27Won’t those who are physically uncircumcised, but fulfill the law, judge you, who with the letter and circumcision are a transgressor of the law? 28For he is not a Jew who is one outwardly, neither is that circumcision which is outward in the flesh;
29but he is a Jew who is one inwardly, and circumcision is that of the heart, in the spirit, not in the letter; whose praise is not from men, but from God.