ISB ~ Romans 2 v14

by nature:The Greek expression can be understood in two ways. (1) If it modifies the verb “do”, as in the translation, it means the Gentiles follow the natural law that God has inscribed on their hearts (CCC 1954, 2070). (2) If it modifies the verb “have”, it means the Gentiles were not privileged by birth to possess the Mosaic Law. This is the sense of the expression in 2:27 (rendered “physically”).

• When Paul says that the Gentiles keep the Law by nature, he means, not by nature apart from grace, but by nature that is healed and restored by grace (St. Augustine, On the Spirit and the Letter 47).