Romans 2:16 Meaning

14For when the Gentiles, which have not the law, do by nature the things contained in the law, these, having not the law, are a law unto themselves:

15Which shew the work of the law written in their hearts, their conscience also bearing witness, and their thoughts the mean while accusing or else excusing one another;)

16In the day when God shall judge the secrets of men by Jesus Christ according to my gospel.

17Behold, thou art called a Jew, and restest in the law, and makest thy boast of God,

18And knowest his will, and approvest the things that are more excellent, being instructed out of the law;