These miracles, and many others of the same nature, which it were tedious to mention, were wrought for the purpose of commending the worship of the one true God, and prohibiting the worship of a multitude of false gods. Moreover, they were wrought by simple faith and godly confidence, not by the incantations and charms composed under the influence of a criminal tampering with the unseen world, of an art which they call either magic, or by the more abominable title necromancy, or the more honorable designation theurgy; for they wish to discriminate between those whom the people call magicians, who practise necromancy, and are addicted to illicit arts and condemned, and those others who seem to them to be worthy of praise for their practice of theurgy,–the truth, however, being that both classes are the slaves of the deceitful rites of the demons whom they invoke under the names of angels.
For even Porphyry promises some kind of purgation of the soul by the help of theurgy, though he does so with some hesitation and shame, and denies that this art can secure to any one a return to God; so that you can detect his opinion vacillating between the profession of philosophy and an art which he feels to be presumptuous and sacrilegious. For at one time he warns us to avoid it as deceitful, and prohibited by law, and dangerous to those who practise it; then again, as if in deference to its advocates, he declares it useful for cleansing one part of the soul, not, indeed, the intellectual part, by which the truth of things intelligible, which have no sensible images, is recognized, but the spiritual part, which takes cognizance of the images of things material. This part, he says, is prepared and fitted for intercourse with spirits and angels, and for the vision of the gods, by the help of certain theurgic consecrations, or, as they call them, mysteries. He acknowledges, however, that these theurgic mysteries impart to the intellectual soul no such purity as fits it to see its God, and recognize the things that truly exist. And from this acknowledgment we