The study and classification of the hierarchy of demons, their powers and limitations, attributes, multiple names, and derivations, as well the investigation of beliefs about demons.
Demonology is also a branch of magic which deals with malevolent spirits.
In religious science demonology has come to indicate knowledge regarding supernatural beings who are not deities.
The hierarchy of demons was much discussed among theological experts in past centuries and many books were published on the subject.
According to Alphonse de Spina (1467), there are 10 species of demons:
Jean Bodin, writing in 1580, claimed that:
"It is certain that the devils have a profound knowledge of all things. No theologian can interpret the Holy Scriptures better than they can; no lawyer has a more detailed knowledge of testaments, contracts and actions; no physician or philosopher can better understand the composition of the human body, and the virtues of the heavens, the stars, birds and fishes, trees and herbs, metals and stones."
See Christianity, Genius, Genii, Jinn, Djin, Heptameron, Demonomancy, Grimoires, Agrippa, Diviner, Divination, Wizard, Pythagoras, Witchcraft, Diviner, Witch, Warlock, Alchemy, Paracelsus, Devil, Kabbalism, Numerology, Alchemy, Magic, Satan, Mystic Gifts and Charms - New Age Gift Shop & Wicca and Pagan Supplies, Love Spells -- Use these powerful love spells to help you find and keep your true love, The Chakra Store, The Tarot Store, Divination & Scrying Tools and Supplies, Unique Amulets, Talismans, Good Luck Charms, and Love Tokens, Powerful Witch Doctor Spell Kits, Powerful Spells - Cast by Andreika the Witch, Webmasters Make $$$, AzureGreen - Celebrating All Paths to the Divine, ISIS - Tools for Your Soul's Journey, The Pyramid Collection - Myth, Magick, Fantasy and Romance, and black magic.
Sources: (1) Masello, Robert, Fallen Angels. . . and Spirits of the Dark, The Berkley Publishing Group; (2) Plangiere, Grimoirium Verum: Containing the Most Approved Keys of Solomon, Trident Books; (3) Guiley, Rosemary Ellen and Zaffis, John, The Encyclopedia of Demons and Demonology, Checkmark Books; (4) Mathers, S.L. MacGregor, Goetia: The Lesser Key of Solomon, CreateSpace Publishers.
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