Universal Proofs of God's Moral Law

Proof #1 - All men will be judged by God's moral law whether or not they have received it in written form (12-13)

Proof #2 - Even those who haven't received God's written moral law create laws that are similar to it (14)

Proof #3 - God's moral law is written on men's hearts such that their consciences attest to right and wrong behavior (15)