Romans 2:28

23 thou who in the law dost boast, through the transgression of the law God dost thou dishonour?

24 for the name of God because of you is evil spoken of among the nations, according as it hath been written.

25 For circumcision, indeed, doth profit, if law thou mayest practise, but if a transgressor of law thou mayest be, thy circumcision hath become uncircumcision.

26 If, therefore the uncircumcision the righteousness of the law may keep, shall not his uncircumcision for circumcision be reckoned?

27 and the uncircumcision, by nature, fulfilling the law, shall judge thee who, through letter and circumcision, [art] a transgressor of law.

28 For he is not a Jew who is [so] outwardly, neither [is] circumcision that which is outward in flesh;

29 but a Jew [is] he who is [so] inwardly, and circumcision [is] of the heart, in spirit, not in letter, of which the praise is not of men, but of God.