"Like the rest of the Ten Commandments, it was merely a reflection of man's fearful desire to protect himself by transferring to the supreme authority of an imagined God decrees against those things that man feared - being murdered; being robbed;..............and so on - that consigned them to the realm of "sin" and the punishment of eternal damnation...."
"There was no morality. There was no sin. There was only fear."
From "Me And The Devil" by Nick Tosches