Romans 2:14–15
14 For when Gentiles, who do not have the law, xby nature do what the law requires, they are a law to themselves, even though they do not have the law. 15 They show that the work of the law is ywritten on their hearts, while their conscience also bears witness, and their conflicting thoughts accuse or even excuse them
Deuteronomy 10:4
4 And qhe wrote on the tablets, in the same writing as before, the Ten Commandments1 rthat the Lord had spoken to you on the mountain out of the midst of the fire son the day of the assembly. And the Lord gave them to me.