Romans 2:16-26 New Revised Standard Version (NRSV)
16 on the day when, according to my gospel, God, through Jesus Christ, will judge the secret thoughts of all.
The Jews and the Law
17 But if you call yourself a Jew and rely on the law and boast of your relation to God 18 and know his will and determine what is best because you are instructed in the law, 19 and if you are sure that you are a guide to the blind, a light to those who are in darkness, 20 a corrector of the foolish, a teacher of children, having in the law the embodiment of knowledge and truth, 21 you, then, that teach others, will you not teach yourself? While you preach against stealing, do you steal? 22 You that forbid adultery, do you commit adultery? You that abhor idols, do you rob temples? 23 You that boast in the law, do you dishonor God by breaking the law? 24 For, as it is written, “The name of God is blasphemed among the Gentiles because of you.”
25 Circumcision indeed is of value if you obey the law; but if you break the law, your circumcision has become uncircumcision. 26 So, if those who are uncircumcised keep the requirements of the law, will not their uncircumcision be regarded as circumcision?