Romans 2:17

14 For when the Gentiles without the law have a natural desire to do the things in the law, they are a law to themselves;

15 Because the work of the law is seen in their hearts, their sense of right and wrong giving witness to it, while their minds are at one time judging them and at another giving them approval;

16 In the day when God will be a judge of the secrets of men, as it says in the good news of which I am a preacher, through Jesus Christ.

17 But as for you who have the name of Jew, and are resting on the law, and take pride in God,

18 And have knowledge of his desires, and are a judge of the things which are different, having the learning of the law,

19 In the belief that you are a guide to the blind, a light to those in the dark,

20 A teacher of the foolish, having in the law the form of knowledge and of what is true;