It's not my policy to comment on or evalute anybody's Religious beliefs, but I think this thread is more about Spiritual stuff, (which, IMO, is or CAN be a COMPONENT of those beliefs,) so I guess it's okay.
What we're talking about here is the idea of us being a body plus a spiritual entity, which co-exist. The body can die, but that spirit continues on.
I had an experience many years back which demonstrated this quite forcefully to me.
I woke up one morning in terrible lower back pain. It was, like SNAPPING over and over. I called some friends who took me to the hospital (pain was so bad it took almost an hour to get from bed to the car, a distance of about 30 feet; man, it was BAD!)
They took x-rays, couldn't figure it out, other than the fact that my spine was convulsing, and chomping at the central nerve cord. (oh, I'd like to point out here, that I didn't die.

)
They gave me drugs which didn't do anything, and this continued in episodic bursts for several days.
Later that day, I was lying on the cyan-blue carpet (they tell you to lie on your back, on the floor.) Another attack came, a REALLY bad one...
....Then all of a sudden, it didn't hurt anymore, and I had this feeling of well-being and peace. Hard to describe, so I won't try, but...then I sort of sensed/saw a body writhing on a field of cyan blue...and felt sorry for it, and wanted to help...suddenly, I became aware that it was my OWN body there, and WHAP!
OWOWOWOW!!! I was back in it, just like before.
Immediately afterward, I knew exactly what had just happened and it gave me something to ponder between the attacks. (Eventually, they went away after a few days, and they occasionally come back every few years, but never that bad.)
But the point is, I know that I left my body. There is no other Theory, man. This was no endrphin rush or oxygen trip. I know what I know.
Like I say, don't wanna step on anybody else's beliefs, but I thought I would share this. I absolutely believe we are spiritual beings, and we do continue after death. Respectfully, KH