Since Baptism signifies liberation from sin and from its instigator the devil, one or more Exorcisms are pronounced over the candidate. the celebrant then anoints him with the oil of catechumens, or lays his hands on him, and he explicitly renounces Satan. Thus prepared, he is able to confess the faith of the Church, to which he will be "entrusted" by Baptism. 39

When the Church asks publicly and authoritatively in the name of Jesus Christ that a person or object be protected against the power of the Evil One and withdrawn from his dominion, it is called Exorcism. Jesus performed exorcisms and from him the Church has received the power and office of exorcizing. 176 In a simple form, exorcism is performed at the celebration of Baptism. the solemn exorcism, called "a major exorcism," can be performed only by a priest and with the permission of the bishop. the priest must proceed with prudence, strictly observing the rules established by the Church. Exorcism is directed at the expulsion of demons or to the liberation from demonic possession through the spiritual authority which Jesus entrusted to his Church. Illness, especially psychological illness, is a very different matter; treating this is the concern of medical science. Therefore, before an exorcism is performed, it is important to ascertain that one is dealing with the presence of the Evil One, and not an illness. 177