Romans 2:17-29

But if thou bearest the name of a Jew, and restest upon the law, and gloriest in God, and knowest his will, and approvest the things that are excellent, being instructed out of the law, and art confident that thou thyself art a guide of the blind, a light of them that are in darkness, a corrector of the foolish, a teacher of babes, having in the law the form of knowledge and of the truth; thou therefore that teachest another, teachest thou not thyself? thou that preachest a man should not steal, dost thou steal? thou that sayest a man should not commit adultery, dost thou commit adultery? thou that abhorrest idols, dost thou rob temples? thou who gloriest in the law, through thy transgression of the law dishonorest thou God? For the name of God is blasphemed among the Gentiles because of you, even as it is written. For circumcision indeed profiteth, if thou be a doer of the law: but if thou be a transgressor of the law, thy circumcision is become uncircumcision. If therefore the uncircumcision keep the ordinances of the law, shall not his uncircumcision be reckoned for circumcision? and shall not the uncircumcision which is by nature, if it fulfil the law, judge thee, who with the letter and circumcision art a transgressor of the law? For he is not a Jew who is one outwardly; neither is that circumcision which is outward in the flesh: 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 of men, but of God.