To start off, I ask the question, is this an appropriate use of religion in the public sphere?
Ah, there’s your problem, that is not the claim that I made.
First of all, please cite that the King James Bible was written thousands of years ago.
Moby Dick never says that only virgins can ride Unicorns, did you need a cite for that too?
Like I said, it is not coincidence that civilization grew up around those who shared a premise that murder was bad. But that did not mean that all members of a community agreed with that. Sometimes those members would leave the community and act as bandits or raiders, and sometimes they would stay in the community and do harm from there.
It actually did need to be written down, in stone as a matter of fact, in order for the people to really get it.
Which is my point, we still don’t think that killing is wrong if there are no negative consequences.
No idea as to what was right and wrong? Not really, they had ideas.
An agreement as to what was right and what was wrong? That needed to be written down for everyone to see.