I have an idea for why this might be and thought I'd make a thread on here to see if anyone has any of their own ideas/theories/what have you.
What occurred to me is I'm guessing the most obvious reasoning. The souls spend time among the gods in-between re-incarnations, so perhaps the souls are intertwined with the gods and not just leaves floating about the godly landscape? Are souls a source of power for the gods as well as the earthly races? Are gods equivalent to a huge accumulation of souls who somehow ended up conjoined? Were gods maybe at the beginning individual extremely powerful souls who stayed awake when entering the realm of the gods and use freshly arriving souls as some sort of sustenance or power increaser? Like a water skin being emptied then sent back to re-fill with a new lifes worth of experiences?
If any of that is spot on, then it would make a lot of sense for the gods to be actively interested in preventing magicians or anyone else from learning how to ably manipulate souls for if they do they may end up being able to manipulate the gods themselves or through artificial means turn themselves into gods.
Of course it could be anything but this is what came to my mind.
Edited by sanian, 01 October 2012 - 11:56 AM.