I'm really glad you brought that up...
In theory, when your body dies, your soul goes to either Heaven or Hell. Once your soul gets to it's destination, it will spend the rest of eternity in it's respective place.
So, what happens when your body dies, but then...gets brought back to life? :dunno:
Does your soul go to Heaven, then realize that your body was revived and haul ass back to earth to rejoin your body? Seriously, what happens? What if your body is revived and you no longer have a soul? Do you get someone else's soul? Do you remain without a soul for the rest of your life?
:dunno:
There are far too many loop-holes in the theory of an "afterlife". No, I don't believe it.