Romans 2:14-18
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;
(KJV)