20For since the creation of the world God's invisible qualities—his eternal power and divine nature—have been clearly seen, being understood from what has been made, so that men are without excuse.
Romans 1:20
What does this tell us?
Every human being is guilty before God, throughout history, and today. We know God's law. We don't need the Internet, or telephones, or this or that to know we are sinful. Or that sin is wrong. Believe me, everyone knows.
The movie the End of the Spear spoke a powerful message about a remote people who knew their warlike murder was wrong, but did it anyway. They almost killed each other off entirely. But - many of them were saved by Christ.
'I will put my law in their minds and write it on their hearts. I will be their God, and they will be my people'" (Jer. 31:33).
And this:
Jesus is the living Torah, the Law or word of God made flesh.
We know what to do. God wrote it in our hearts.
Some call is "conscious."
Well, it isn't Jimney Cricket on your shoulder. It is the Law of God written in the hearts of all human beings.
Christ even reminded us of this, the inherent law, and the overt law, of God:
"If you love me, you will obey what I command."
John 14:15
What we need to do is preach the Good News to the world. As Nana said, don't limit God.