Separation of Soul and Body

A challenge to any assertion of the essential separation of Soul and Body is to explain how interaction between them becomes possible.  No such challenge faces correlative dualisms, such as Form-Matter, since their unity is given, and is never disrupted.  Some commonality between Soul and Body is necessary for interaction to occur, but recourse to some tertium quid merely displaces the problem.  However, in standard theological contexts, the question of Soul-Body unity is itself a displacement of a more fundamental problem--how a presumably incorporeal deity creates corporeal existence, i. e. creates existence that is antithetical to its own nature.  That problem also underlies the question of how 'evil' can come to exist in a world created by an omnipotent 'good' deity, except in this case, the attribution of 'free will' to some creature does not suffice to explain the existence of corporeality, as it might to explain the existence of 'evil'.  So, the standard theologization of Soul-Body separation bears out its underlying premise--the ontological inferiority of Body to Soul.  Conversely, absent that implicit evaluation, Soul and Body can be conceived as correlative, like Form and Matter, and any unity is easily explained.