“At this ‘mass,’ always held in some secret place, preferably in a disused chapel, at midnight, the priest appears in canonical robes.
“The ‘Black Mass’ is a totally different matter.
I could not celebrate it if I wanted to, for I am not a consecrated priest of the Christian Church.
The celebrant must be a priest, for the whole idea of the practice is to profane the Sacrament of the Eucharist. Therefore you must believe in the truth of the cult and the efficacy of its ritual.” [via, also]
On the Cup. David Richard Jones aka T Satanas
“a direct link between the sacrament, as consecrated by the Priest and Priestess at the altar, and the cake and cup consumed by the congregant, is necessary for the sacrament to be efficacious.” [via]