KJV: For 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:
NASB: For when Gentiles who do not have the Law do instinctively the things of the Law, these, not having the Law, are a law to themselves,
KJV: Which 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;)
NASB: in that they show the work of the Law written in their hearts, their conscience bearing witness and their thoughts alternately accusing or else defending them,