Exorcism in Christianity
Exorcism in Christianity is the practice of casting out demons from a person they are believed to have possessed. The person performing the exorcism, known as an exorcist, is often a member of the Christian Church, or an individual thought to be graced with special powers or skills. The exorcist may use prayers and religious material, such as set formulas, gestures, symbols, icons, amulets, etc. The exorcist often invokes God, Jesus and/or several different angels and archangels to intervene with the exorcism. A survey of Christian exorcists found that most exorcists believe that any mature Christian can perform an exorcism, not just members of clergy. Christian exorcists most commonly believe the authority given to them by the Father, Son, and Holy Spirit (the Trinity) is the source of their ability to cast out demons.
Exorcism
In Taoism, exorcisms are performed because an individual has been possessed by an evil spirit for one of two reasons. The individual has disturbed a ghost, regardless of intent, and the ghost now seeks revenge. An alive person could also be jealous and uses black magic as revenge thereby conjuring a ghost to possess someone. Members of the fashi, both Chinese ritual officers and priests ordained by a celestial master, perform Chinese rituals, in particular, exorcisms.