Yes, but, regardless of what you've just shared -- some of which I agree with -- it isn't erroneous to regard Vanessa and Amunet as one and the same. When I mentioned Christ, I was specifically referring to one popular interpretation of the Trinity (I know there are many). Like Vanessa, prior to his ascension, Christ was very much a human being. While having obvious differences from God the Father, traditional Catholics perceive him as being not only divine but somehow the same in a way the human mind cannot understand.
It's important to note that Vanessa is not possessed (reincarnation is something altogether different). If anything, the finale shows that Vanessa embraced her inner self; and that's how she was able to triumph over the Devil.
^ I believe we're close to being on the same page, Killer. I just don't think one "takes the backseat" in allowing his/her true essence to emerge. Again, what you describe sounds more like a possession, whereas Vanessa -- in my humble opinion -- embraced the part of herself that is Amunet.
I get your point, and I do agree with it... I can see how it might look like I was describing a possession, though I was more or less referring to two natures living interchangeably within the same body/mind more than as one. As of now, that is. It is quite possible that mortal "Vanessa" part and pre-Vanessa Amunet part will completely merge into a more cohesive entity at some point. Could be, that like you suggested, that actually happened in the end and from now on she'll be Amunet on more conscious level. Perhaps that's why Ethan couldn't hurt her as his true inner nature (wolf of God) recognized her true inner nature on some level. Or perhaps he would recognize her as Amunet anyway and he was never able to hurt her, so he was storming out of the Joan's cottage for no real reason few episodes ago.
My point was more, Amunet/Vanessa relationship always seemed to manifest in a rather schizophrenic way, at least to me.
As for the reincarnation, I am actually quite familiar with many teachings regarding that concept. It might strike you as odd that I constantly refer to "two natures" when reincarnation teaches that it is the same soul/entity starting new life in different body, though, as you can guess, like with Christ's nature, there is more than one interpretation and teaching when it comes to it... still, general "rule" would be that even though Amunet that is reincarnated as Vanessa is the same entity that existed for centuries before, she is not entirely the pre-Vanessa Amunet, since she doesn't consciously remember her previous incarnations (or in case of Amunet - primeval life. I'll get to that later) and given the different life experiences or (more in line with hinduistic and buddhistic teachings) different Karma, due to her actions as "Vanessa".
It should be kept in mind that Amunet is a primordial goddess, so it is a bit of a game changer when it comes to the "reincarnation" part. She couldn't live in this world as human being from the beginning, so is it possible that she came from different realm altogether and Vanessa is her first reincarnation in human body?
I think that we in general do agree on most key points here. Thing being that we approach the matter somewhat differently.