Romans 2:15

who show the work of the law written in their hearts, their conscience also bearing witness, and between themselves their thoughts accusing or else excusing them)

Surrounding context

2:14 for when Gentiles, who do not have the law, by nature do the things in the law, these, although not having the law, are a law to themselves,

2:15 who show the work of the law written in their hearts, their conscience also bearing witness, and between themselves their thoughts accusing or else excusing them)

2:16 in the day when God will judge the secrets of men by Jesus Christ, according to my gospel.

Translation and sources