Romans 2:14-15

WNT(i) 14 For when Gentiles who have no Law obey by natural instinct the commands of the Law, they, without having a Law, are a Law to themselves; 15 since they exhibit proof that a knowledge of the conduct which the Law requires is engraven on their hearts, while their consciences also bear witness to the Law, and their thoughts, as if in mutual discussion, accuse them or perhaps maintain their innocence--