¥See Paul's remarks in Romans 2:17-24 regarding Jewish self-righteousness:
–17 (NIV) Now you, if you call yourself a Jew; if you rely
on the law and brag about your
relationship to God; 18 if you know his will and approve of what is
superior because you are instructed by the law; 19 if you are
convinced that you are a guide for the blind, a light for those
who are in the dark, 20 an instructor of the foolish, a teacher of
infants, because you have in the law the embodiment of knowledge and
truth– 21 you, then, who teach others, do you not teach
yourself? You who preach against stealing, do you steal? 22
You who say that people should not commit adultery, do you
commit adultery? You who abhor idols, do you rob temples? 23 You
who brag about the law, do you dishonor God by breaking
the law? 24 As it is written: "God's name is blasphemed among
the Gentiles because of you."