In the natural world I would over power you, take your food, shelter and women leaving you out in the cold. Through the moral values instilled in humans, by their religion, I instead, if you were nearby, would bring you a gift and wish you Merry Christmas.
And through the moral values instilled in other humans by their religion, they would declare a Jihad on me and cut my throat.
Moral values and religion are part of the "natural" world. Actually, the term is redundant, since nature by definition encompasses everything that exists.