What is an exorcism?
It is a service of deliverance from influences of evil spirits, Jesus Christ did it and commissioned His disciples to do so using words “Heal the sick, raise the dead, cleanse lepers, drive out demons” (Mt 10,8). Exorcism (from Greek “exorkizein” means “to curse”) is the command to leave a human being, an animal, place or item, given to the demon in Name of God. It is a special sort of blessing (sacramental) that a priest conducts in certain situations and needs.