Spirit possession

Spirit possession is an altered state of consciousness and associated behaviors which are purportedly caused by the control of a human body and its functions by spirits, ghosts, demons, angels, or gods. The concept of spirit possession exists in many cultures and religions, including Buddhism, Christianity, Dominican Vudú, Haitian Vodou, Hinduism, Islam, Judaism, Wicca, and Southeast Asian, African, and Native American traditions. Depending on the cultural context in which it is found, possession may be thought of as voluntary or involuntary and may be considered to have beneficial or detrimental effects on the host. The experience of spirit possession sometimes serves as evidence in support of belief in the existence of spirits, deities or demons. In a 1969 study funded by the National Institute of Mental Health, spirit-possession beliefs were found to exist in 74% of a sample of 488 societies in all parts of the world, with the highest numbers of believing societies in Pacific cultures and the lowest incidence among Native Americans of both North and South America. As Pentecostal and Charismatic Christian churches move into both African and Oceanic areas, a merger of belief can take place, with demons becoming representative of the "old" indigenous religions, which Christian ministers attempt to exorcise.

From the beginning of Christianity, adherents have held that possession derives from the Devil (i.e. Satan) and demons. In the battle between Satan and Heaven, Satan is believed to engage in "spiritual attacks", including demonic possession, against human beings by the use of supernatural powers to harm them physically or psychologically. Prayer for deliverance, blessings upon the person's house or body, sacraments, and exorcisms are generally used to drive the demon out.

Some theologians, such as Ángel Manuel Rodríguez, say that mediums, like the ones mentioned in Leviticus 20:27, were possessed by demons. Another possible case of demonic possession in the Old Testament includes the false prophets that King Ahab relied upon before re-capturing Ramoth-Gilead in 1 Kings 22. They were described as being empowered by a deceiving spirit.

The New Testament mentions several episodes in which Jesus drove out demons from persons. Whilst most Christians believe that demonic possession is an involuntary affliction, some biblical verses have been interpreted as indicating that possession can be voluntary. For example, Alfred Plummer writes that when Satan entered into Judas Iscariot in John 13:27, this was because Judas had continually agreed to Satan's suggestions to betray Jesus and had wholly submitted to him.

The New Testament indicates that people can be possessed by demons, but that the demons respond and submit to Jesus Christ's authority:

In the synagogue, there was a man possessed by a demon, an evil spirit. He cried out at the top of his voice, "Ha! What do you want with us, Jesus of Nazareth? Have you come to destroy us? I know who you are—the Holy One of God!" "Be quiet!" Jesus said sternly. "Come out of him!" Then the demon threw the man down before them all and came out without injuring him. All the people were amazed and said to each other, "What is this teaching? With authority and power he gives orders to evil spirits and they come out!" And the news about him spread throughout the surrounding area

— Luke 4:33–35

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