Romans 2:14–15

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. They show that the work of the law is written on their hearts, while their conscience also bears witness, and their conflicting thoughts accuse or even excuse them

(Indeed, when Gentiles, who do not have the law, do by nature things required by the law, they are a law for themselves, even though they do not have the law. They show that the requirements of the law are written on their hearts, their consciences also bearing witness, and their thoughts sometimes accusing them and at other times even defending them.)

So, when Gentiles, who do not by nature have the law, do what the law demands, they are a law to themselves even though they do not have the law. They show that the work of the law is written on their hearts. Their consciences confirm this. Their competing thoughts either accuse or even excuse them

Even Gentiles, who do not have God’s written law, show that they know his law when they instinctively obey it, even without having heard it. They demonstrate that God’s law is written in their hearts, for their own conscience and thoughts either accuse them or tell them they are doing right.

For whenever the Gentiles, who do not have the law, do by nature the things of the law, these, although they do not have the law, are a law to themselves, who show the work of the law written on their hearts, their conscience bearing witness and their thoughts one after another accusing or even defending them

For when the Gentiles, which have not the law, do by nature the things contained in the law, these, having not the law, are a law unto themselves: Which shew the work of the law written in their hearts, their conscience also bearing witness, and their thoughts the mean while accusing or else excusing one another;)