Hi Seattlegal – season's greetings!
Isn't that what water baptism is all about? Isn't it about the open physical recognition of "the body of the faithful?"
Indeed, and the symbolic references are manifold – and only come to full meaning when viewed against their particular background.
It occurs to me, following your lead, that some might argue that 'baptism' – or the rite of washing – is a universal symbol of purification, which it is, however to understand Christian baptism one should look at all the Christian formative data, which is the foundation of its hermeneutic.
So in that sense, baptism, as an initiatic rite, is a symbol of deliverance, with reference to the Exodus and specifically passage through the Red Sea, which again infers the upper and lower waters of the Creation ... then we have Jesus walking on the water, and what that signifies, the Flood, the Ark, ... again and again the references are not only to the spiritual but also the communal ...
Thomas