"Eliphas Levi in Transcendental Magic recognizes Azazel as a vessel for black magic:
IN BLACK MAGIC, THE DEVIL is THE GREAT MAGICAL AGENT EMPLOYED FOR EVIL PURPOSES BY A PERVERSE WILL.
The old serpent of the legend is nothing else than the BLACK MAGIC, universal agent, the eternal fire of terrestrial life, the soul of the earth, and the living fount of hell.
We have said that the astral light is the receptacle of forms, and these when evoked by reason are produced harmoniously, but when evoked by madness they appear disorderly and monstrous ; so originated the nightmares of St Anthony and the phantoms of the Sabbath.
Do, therefore, the evocations of goetia and demonomania possess a practical result?
Yes, certainly one which cannot be contested, one more terrible than could be recounted by legends!
When any one invokes the devil with intentional ceremonies, the devil comes, and is seen.
To escape dying from horror at the sight, to escape catalepsy or idiocy, one must be already mad.