it carries the image of supreme value, the golden cup, which is synonymous, symbolically, with the Holy Grail. The golden cup brings to mind a couple of Biblical parallels.
Edinger argues that the golden cup held by the Whore of Babylon paradoxically embodies supreme psychic value and is symbolically equivalent to the Holy Grail, revealing how the highest contents may be borne by the most despised image.
, The Mysterium Lectures: A Journey Through C.G. Jung’s Mysterium Coniunctionis, 1995thesis