Romans 2:14

2:14 For whenever the Gentiles, who do not have the law, do by nature the things required by the law, these who do not have the law are a law to themselves.

Romans 14:22

14:22 The faith you have, keep to yourself before God. Blessed is the one who does not judge himself by what he approves.

Romans 15:23

15:23 But now there is nothing more to keep me in these regions, and I have for many years desired to come to you