The only heavens and hells which I'm aware of are those we concoct within our own minds, believe to be true, and then proceed to inflict upon ourselves and each other.
I think it extremely probable that what most folks call 'God' is nothing more than an imaginary friend for grown-ups.
When a wave crashes ashore, it appears to be destroyed. However, if you look deeply, you will see that the true nature of waves is water. When a wave breaks, that's only it's outer form; the water isn't harmed at all. It simply returns to the sea from whence it came, and from whence it never really left.
I think that our death is very much like that.