How was Cain supposed to know God would reject his sacrifice?
In the flood narrative—it says that the people were evil. I wonder if they knew they were evil?
How did people know God?
How did they know, after the fall, what he expected of them?
The text doesn't reveal moral law being laid out for them.
Romans says that creation itself speaks of God.
Romans 2:14-15 states,
When Gentiles, who do not have the law, do by nature things required by the law, they are a law for themselves, even though they do not have the law, since they show that the requirements of the law are written on their hearts, their consciences also bearing witness, and their thoughts now accusing, now even defending them.
Is this a function of the God gene? Is it the evidence of God?