Originally Posted by
Volya
I think we can work out how we came to this idea of Heaven pretty easily. From what I know of mythology and religion, the ancient Greeksbelieved in the Underworld where Hades ruled, and Mount Olympus where the rest of the Gods lived. Mount Olympus was up in the sky beyond the clouds.
Now although in this idea of things, ALL of the dead went to the Underworld, my understanding is that once they went there they were separated, with the better people getting a better/less-punishing afterlife (anyone with better knowledge please correct me if I'm wrong).
The greatest heroes went to Mt Olympus to live with the gods. Now this already draws parallels with the modern concept of Heaven, with the good/heroic going 'up to the clouds in the sky' and the bad people going down underground to a dark, desolate world. Angels have also an extensive history, with the word itself meaning 'messenger', relating to Hermes the winged messenger god. I believe they also had cherubs back then too.
So from looking at what the Greeks believed, it's not too much of a jump to see how this has evolved over time into the concept we have now.
This is all pure speculation from me based on what I know, so I'm not entirely sure how much is true.