So in the having of a Soul, we have to account for it in the course of daily life. The Soul isn't something you fetch out on a prayer mat or introduce before dinner, it's an inescapable, unaccountable presence, which is why religions want it so badly and science is still arguing as to whether it's actually real. In some circles, train of thought goes that the Soul can be shared between two bodies, that these Twin Flame people you've seen me banging on about for a while are in fact the same soul in different suits.
I don't see how this can be the case, as to my mind our individuality isn't only skin-deep - the Soul is individual too, indivisible in particle format because it has a core of itself, a Singularity, and you can't share a singularity. Two singularities equal one big explosion, which might explain a lot of the TF stuff that goes on these days, but doesn't explain the survival of the participants.
You'll have seen through Harry Potter and Indiana Jones that there are times when you have to trust in something you cannot see. Indie had to step onto a bridge that apparently wasn't there, and Harry has done so many Trust the Invisible tricks that I can't remember any of them. We are not who our Souls are, or even who we think we are; we're a version of our Soul living out an earthly existence that colours judgement and belief through a series of circumstances beyond our control into creation of patterns only the subconscious really knows are there. Soul is invisible, by and large, with exceptions. When a Dark Night strips you of your senses, which it effectively does while it's downloading its information, all that junk DNA they used to tell of is merrily being rewired from your experience.