God’s judgment is absolutely just

^12-13 All who have sinned without knowledge of the Law will die without reference to the Law; and all who have sinned knowing the Law shall be judged according to the Law. It is not familiarity with the Law that justifies a man in the sight of God, but obedience to it.

^14-15 When the Gentiles, who have no knowledge of the Law, act in accordance with it by the light of nature, they show that they have a law in themselves, for they demonstrate the effect of a law operating in their own hearts. Their own consciences endorse the existence of such a law, for there is something which condemns or commends their actions.