Yeah, murdering etc is wrong because it's necessary for the survival of societies. Even animal societies. Maybe they don't have "laws" and it's less organized and everything, but say elephants and gorillas, etc. think it's wrong.... within their society. Just like humans. Going to war isn't inherently wrong...
and go back 2000 years, and you will find that murder, violent act, etc. was wrong. Go back even more, same thing. It was wrong WAY before the bible, koran, torah, etc.
Even places right now... in tribes in the amazone, etc. where they haven't been exposed to western religions, it's still wrong to do things like that.
Look at societies that don't think that's AS wrong, and you'll see they didn't last very long. (or maybe the whole thing, say vikings survived for a long time, but not individual groups)
same thing with all the other emotions, taboos, etc. You can explain basically all of them in the same way you can explain murder-violent act being wrong. They're necessary for societies to survive, and other animal societies have the same things.
so as you can see, religion did NOT come up with right and wrong (unless you want to argue other animals have religion). Religion basically just stated what was already believed to be right and wrong, and everyone was just like "oh yes yes! *nodds* I agree! everything in the book must be true!"