Demon
The contemporary Roman Catholic Church unequivocally teaches that angels and demons are real beings rather than just symbolic devices. The Catholic Church has a cadre of officially sanctioned exorcists which perform many exorcisms each year. The exorcists of the Catholic Church teach that demons attack humans continually but that afflicted persons can be effectively healed and protected either by the formal rite of exorcism, authorized to be performed only by bishops and those they designate, or by prayers of deliverance, which any Christian can offer for themselves or others.
Traité sur les apparitions des esprits et sur les vampires ou les revenans de Hongrie, de Moravie, &amp;c.
Calmet researched a judicial case that described the possession of Mademoiselle Elizabeth de Ranfaing, who having become a widow in 1617, was later sought in marriage by a physician (afterwards burned under judicial sentence for being a practicing magician). After being rejected, he gave her philters to make her love him which occasioned strange developments in her health and proceeded to continuously give her some other forms of medicament. The maladies which she suffered were incurable by the various physicians that attended her and eventually led to a recourse of exorcisms as prescribed by several physicians that examined her case. They began to exorcise her in September, 1619. During the exorcisms, the demon that possessed her made detailed and fluid responses in varying languages including French, Greek, Latin, Hebrew and Italian and was reportedly able to know and recite the thoughts and sins of various individuals who examined her. She was further also able to describe in detail with the use of various languages the rites and secrets of the church to experts in the languages she spoke. There was even a mention of how the demon interrupted an exorcist, who after making a mistake in his recital of an exorcism rite in Latin, corrected his speech and mocked him.