In Christian terms demons are generally understood as fallen angels, formerly of God. A demon is frequently depicted as a force that may be conjured and insecurely controlled. The "good" demon in recent use is largely a literary device (e.g., Maxwell's demon), though references to good demons can be found in Hesiod and Shakespeare. http://books.google.com/books?id=kdsOAAAAIAAJ&pg=PA409&lpg=PA409&dq=holy+demons+made+hesiod&source=web&ots=ddUSAdcNj6&sig=CBHwkS6DTVkgVFKf-aHf3_1hEKU ; Antony and Cleopatra Act II, Scene 3 In colloquial parlance, to "demonize" a person means to characterize or portray them as evil, or as a source of evil. The mythical Sweeney Todd was accorded the title Demon Barber of Fleet Street in a 1936 film. The 19th-century Australian cricketer Fred Spofforth was nicknamed "the Demon (Bowler)", partly because of his tactic of inspiring fear in batsmen.
The medieval and neo-medieval conception of a "demon" in Western civilization (see the Medieval grimoire called the Ars Goetia ) derives seamlessly from the ambient popular culture of Late (Roman) Antiquity. Greco-Roman concepts of daemons that passed into Christian culture are discussed in the entry daemon, though it should be duly noted that the term referred only to a spiritual force, not a malevolent supernatural being. The Hellenistic "daemon" eventually came to include many Semitic and Near Eastern gods as evaluated by Christianity.
In some present-day cultures, demons are still feared in popular superstition, largely due to their alleged power to possess living creatures.
The se'irim ("hairy beings"), to which some Israelites offered sacrifices in the open fields, are satyr-like creatures, described as dancing in the wilderness Isaiah 13:21, 34:14 , and which are identical with the jinn, such as Dantalion, the 71st spirit of Solomon. (But compare the completely European woodwose.) Possibly to the same class belongs Azazel, the goat-like demons of the wilderness Leviticus 16:10ff , probably the chief of the se'irim , and Lilith Isaiah 34:14 - where the KJV Bible translates the Hebrew word 'lilith' as "screech owl" . Possibly "the roes and hinds of the field", by which Shulamit conjures the daughters of Jerusalem to bring her back to her lover Canticles 2:7, 3:5 , are faunlike spirits similar to the se'irim , though of a harmless nature.
But they also spoke of "the destroyer" (Exodus xii. 23) as a demon whose malignant effect upon the houses of the Israelites was to be warded off by the blood of the paschal sacrifice sprinkled upon the lintel and the door-post (a corresponding pagan talisman is mentioned in Isaiah lvii. 8). In II Samuel xxiv; 16 and II Chronicles xxi. 15 the pestilence-dealing demon is called "the destroying angel" (compare "the angel of the Lord" in II Kings xix. 35; Isaiah xxxvii. 36), because, although they are demons, these "evil messengers" (Psalms lxxviii. 49; A. V. "evil angels") do only the bidding of God; they are the agents of His divine wrath.
To them were ascribed the various diseases, particularly such as affect the brain and the inner parts. Hence there was a fear of "Shabriri" (lit. "dazzling glare"), the demon of blindness, who rests on uncovered water at night and strikes those with blindness who drink of it; Pesachim 112a; Avodah Zarah 12b also mentioned were the spirit of catalepsy and the spirit of headache, the demon of epilepsy, and the spirit of nightmare.
To cure such diseases it was necessary to draw out the evil demons by certain incantations and talismanic performances, in which the Essenes excelled. Josephus, who speaks of demons as "spirits of the wicked which enter into men that are alive and kill them", but which can be driven out by a certain root, Bellum Judaeorum vii. 6, 3 witnessed such a performance in the presence of the Emperor Vespasian, "Antiquities" viii. 2, 5 and ascribed its origin to King Solomon.
B. 73b; 'Er. 100b; Nid. 24b . "When Adam, doing penance for his sin, separated from Eve for 130 years, he, by impure desire, caused the earth to be filled with demons, or shedim, lilin, and evil spirits." Gen. R. xx.; 'Er. 18b Demonology never became an essential feature of Jewish theology. The reality of demons was never questioned by the Talmudists and late rabbis; most accepted their existence as a fact. Nor did most of the medieval thinkers question their reality. Only rationalists like Maimonides and Abraham ibn Ezra, clearly denied their existence. Their point of view eventually became the mainstream Jewish understanding.
It should be noted that some denominations asserting Christian faith also include, exclusively or otherwise, fallen angels as de facto demons; this definition also covers the "sons of God" described in Genesis who abandoned their posts in heaven to mate with human women on Earth before the Deluge Genesis 6:2, 4, also see Nephilim.
Jesus is far superior to the power of demons over the beings that they inhabit, and he is able to free these victims by commanding and casting out the demons, by binding them, and forbidding them to return. Jesus also apparently lends this power to some of his disciples, who rejoice at their new found ability to cast out all demons.
Augustine of Hippo, City of God , ch. 11: Of the Opinion of the Platonists, that the Souls of Men Become Demons When Disembodied.
The Catholic Church has a cadre of officially sanctioned exorcists which perform many exorcisms each year. The exorcists of the Catholic Church teach that demons attack humans continually but that afflicted persons can be effectively healed and protected either by the formal rite of exorcism, authorized to be performed only by bishops and those they designate, or by prayers of deliverance which any Christian can offer for themselves or others.
Their defeat was never in question, since God is by nature omnipotent, but Michael was given the honour of victory in the natural order; thus the rise of Christian veneration of the archangel Michael, beginning at Monte Gargano in 493, reflects the full incorporation of demons into Christianity.
Some contest that this view, championed by Origen, Augustine and John Chrysostom, arose during the 6th century. Another theory that may have preceded or co-existed with the hypothesis of fallen angels was that demons were ostracized from Heaven for the primary sin of mating with mortal women, giving rise to a race of half-human giants known as the Nephilim. That theory is accepted by some contemporary Christian sects.
But very soon, among the Indo-Aryans, Asura came to exclusively mean any of a race of anthropomorphic but hideous demons. All words such as Asura, Daitya (lit., sons of the demon-mother "Diti"), Rakshasa (lit. from "harm to be guarded against") are translated into English as demon. These demons are inherently evil and are in a constant battle against the demigods. Hence in Hindu iconography, the gods and demigods are shown to carry weapons to kill the asuras. Unlike Christianity, the demons are not the cause of the evil and unhappiness in present mankind (which occurs on the account of ignorance from recognizing one's true self). In later Puranic mythology, exceptions do occur in the demonic race to produce god-fearing Asuras like Prahalada. Also, many Asuras are said to have been granted boons from one of the members of the Hindu trinity, viz., Brahma, Vishnu and Shiva when the latter had been appeased from penances. All Asuras, unlike the devas, are said to be mortals (though they vehemently wish to become immortal). Many people metaphorically interpret these demons as manifestations of the ignoble passions in human mind.
Source: Wikipedia > Demon
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