“But mediumship, as now understood and manifested, is a different thing. Circumstances, independent of his own volition, may, either at birth or subsequently, modify a person’s aura, so that strange manifestations, physical or mental, diabolical or angelic, may take place. Such mediumship, as well as the above-mentioned mediatorship, has existed on earth since the first appearance here of living man. The former is the yielding of weak, mortal flesh to the control and suggestions of spirits and intelligences other than one’s own immortal demon.
It is literally obsession and possession; and mediums who pride themselves on being the faithful slaves of their “guides”, and who repudiate with indignation the idea of “controlling” the manifestations, “could not very well deny the fact without inconsistency.
This mediumship is typified in the story of Eve succumbing to the reasonings of the serpent; of Pandora peeping in the forbidden casket and letting loose on the world, sorrow and evil, and by Mary Magdalene, who from having been obsessed by ‘seven devils’ was finally redeemed by the triumphant struggle of her immortal spirit, touched by the presence of a holy mediator, against the dweller.” This mediumship, whether beneficent or maleficent, is always passive.
Happy are the pure in heart, who repel unconsciously, by that very cleanness of their inner nature, the dark spirits of evil. For verily they have no other weapons of defense but that inborn goodness and purity. Mediumism, as practiced in our days, is a more undesirable gift than the robe of Nessus.”
H. P. Blavatsky