the golden cup brings to mind a couple of Biblical parallels. In Ecclesiastes there is reference to a golden bowl: Before the silver cord is loosed, or the golden bowl is broken, or the pitcher is broken at the fountain.
Edinger equates the golden bowl of Ecclesiastes with the Holy Grail, reading it as a symbol of supreme psychic value that persists even within the most negative archetypal-feminine image, the Whore of Babylon.
, The Mysterium Lectures: A Journey Through C.G. Jung’s Mysterium Coniunctionis, 1995thesis