Lots of crappy reasoning on here that is nothing to do with the original question. Like the brain is distinct from the mind the soul is distinct from the body. When you die the brain dies, your body dies but your soul/spirit/whatever is not a function of the body but the mind.
I'm not affiliated to any religion but I have studied physics and one law states that energy cannot be destroyed only transferred from one form to another. So I'm not sure if I believe in life after death or rebirth but I'm sure there isnt jsut blackness and void.