The mainstream rituals usually take this into account, making sure that there is no violence to the possessed, only that they be tied down if there is potential for violence. Therefore, practitioners regard exorcism as more of a cure than a punishment. In general, people considered to be possessed are not regarded as evil in themselves, nor wholly responsible for their actions, because possession is considered to be unwilling manipulation by a demon resulting in harm to self or others. Protestant Christian exorcists most commonly believe the authority given to them by the Father, Son, and Holy Spirit (the Trinity) is the sole source of their ability to cast out demons. The exorcist often invokes God, Jesus or several different angels and archangels to intervene with the exorcism. The exorcist may use prayers and religious material, such as set formulas, gestures, symbols, icons, amulets, etc. In Christian practice 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. In Christianity, exorcism is the practice of casting out or getting rid of demons.