Romans 1 is a graphic depiction of human depravity, which is not a steep vertical fall, but a descending spiral of ungodliness that begins with rejection of God’s revelation and ends with a fateful last step into outer darkness.
It’s a story we should tell more often because it cuts to the chase. Paul doesn’t promise happiness, wealth, or comfort to the sinner who receives Jesus as Savior. Rather, he warns those who persist in rebellion against God of the peril they face when the divine hand of grace finally lets them go.
First, Paul makes it clear that no person stands before God with a valid defense for unbelief. God has revealed Himself to all people in at least two ways: creation and conscience.
In creation, He has shown the wicked His eternal power and divine nature, “being understood through what he has made” (v. 20). A simple gaze into the heavens on a starry night reveals the vastness, beauty, and intricacy of the universe, so that any reasonable person must conclude a divine Designer is behind it all.
Further, God has placed in every heart a knowledge of His holy standards. Regardless of geography, religion, culture, or historic era, everyone knows intuitively that certain deeds are always wrong for all people at all times, and certain deeds are always right (Rom. 2:14-16).
This universal moral compass points inextricably to a divine Law Giver.