This made me sit up and take notice. One of the more hellish Islamic tales that did the rounds while I grew up featured the person having to cross a razor–sharp bridge. Of course, a true mu’min (believer) would cross it safely. The kafir would plunge to their doom into eternal Hell. Now I see it, like quite a few elements, could possibly come from Zoroastrianism.

I must look into this further…

Paradise is also the walled garden of eden which the fabled Adam and Eve story comes from. So all Christians seem to spend their life trying to get back into it (Gods favour that is)