Man has innately known this throughout history. History is replete with examples of people trying to earn some measure of forgiveness in an effort to please the Creator. Sacrifices, even child sacrifices, have been made in this vein. Others have resorted to myriads of forms of asceticism, some even cutting themselves to appease the gods. Today we have people literally blowing themselves up because they believe that is the only sure way to earn forgiveness and avoid eternal punishment. All of this because there is an innate sense of guilt due to sin. Yet for all that people have done in the name of appeasing the gods, they never achieve peace of mind. They never truly feel free from the guilt and penalty of sin. This is why Romans 1 says people “suppress” the truth. Of course, we know that Jesus said in John 8:32 that the truth will set you free.