Romans 2:13-16

¹³It is not those who hear the words of a Law that are righteous before God, but it is those who obey it that will be pronounced righteous.

¹⁴When Gentiles, who have no Law, do instinctively what the Law requires, they, though they have no Law, are a Law to themselves;

¹⁵for they show the demands of the Law written on their hearts; their consciences corroborating it, while in their thoughts they argue either in self-accusation or, it may be, in self-defence —

¹⁶on the day when God passes judgement on people's inmost lives, as the good news that I tell declares that he will do through Christ Jesus.