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
From the 16th century onward, Lutheran pastoral handbooks describe the primary symptoms of demonic possession to be knowledge of secret things, knowledge of languages one has never learned, and supernatural strength. Before conducting a major exorcism, Lutheran liturgical texts state that a physician be consulted in order to rule out any medical or psychiatric illness. The rite of exorcism centers chiefly around driving out demons "with prayers and contempt" and includes the Apostle's Creed and Our Father.