Romans 2

29 But he is a Jew which is one inwardly, and circumcision is that of the heart; in the spirit, and not in the letter; whose praise is not of men, but of God.

Romans 3

1 What advantage then hath the Jew? or what profit is there of circumcision?

2 Much every way: chiefly, because that they were committed to the oracles of God.