By Nature

Romans 2:13-14 (ESV)

13 For it is not the hearers of the law who are righteous before God, but the doers of the law who will be justified. 14 For when Gentiles, who do not have the law, by nature do what the law requires, they are a law to themselves, even though they do not have the law.

People who have the nature and mind of Christ, those who are in Christ, do what the law requires because Jesus fulfilled the law. His righteousness has become ours.