You might want to do some research on NDE (near death experiences). Although I don't believe that people experiencing NDE have really died, but have had out-of-body experience. Many testimonials of NDE provide descriptions of heavenly entities and environments. The NDE of children are probably the most innocent and truthful experiences.
I had my own death experience, but it was different from any NDE I have found. For me, my senses were the same although more acute. When you have died, you will Know that you are gone and cannot come back. You see your surroundings just like you do in this life on this earth , but you are in a different dimension... the Spiritual dimension. And... you realize that you have a body, just like you had here.
You have asked a very complex question that appears to be inane, but is really important. The more Faith people have in their afterlife, the more peaceful their transition from this life to the next will be.