AFter we died, most of the time we will see the light at the end of the tunnel. In there we will see the person we know, and the person we do not know. They are actually close to us, it can be our family, friends etc. They greet us and help us to cross over to the spiritual realm.

But when we do OBE (out of body experiences), most of the time we will not see the light.

Person who have died still have their traumatic events, it will need sometime to recover from sickness and illness.

They will know with my list above because they experience it. Its not some heavenly paradise or fire of hell. there is heavenly paradise out there of the universe but only if we achieve very high level of spirituality. unfortunately most people doesnt achieve it. They live again just like this earth.