The fire is the answer to that which within the matter is dormant and ready to burst into flame. The spark sets ablaze that which has for long fermented in the darkness, readying itself for the moment of effulgence. So it is with love, the fire which consumes the body. The only difference being that whereas fire consumes into ash, love, paradoxically, conserves and augments that in which it burns. For this the paradigm image is the burning bush of Moses. Reason and economy cannot follow us into this realm.
If your spirit cannot taste the wine then your body, drinking it, will only go down and down—the same metaphor applies for sexual energies and, indeed, every manifestation, the life itself of the body.