Romans 2:13-15

¹³For it is not the hearers of the law who will be judged as having righteousness before God, but only the doers:

¹⁴For when the Gentiles without the law have a natural desire to do the things in the law, they are a law to themselves;

¹⁵Because the work of the law is seen in their hearts, their sense of right and wrong giving witness to it, while their minds are at one time judging them and at another giving them approval;