Tertullian (160-220) insisted that a malevolent angel was in constant attendance upon every person, but in writing to the pagans in a time of persecution he challenged his opponents to bring forth any person who was possessed by a demon or any of those prophets or virgins who were supposed to be inspired by a divinity. He asserted that all demons would be compelled to confess their diabolical character when questioned by any Christians, and invited the pagans, if it were otherwise, to put the Christian immediately to death, for this, he thought, was the simplest and most decisive demonstration of the faith. Lecky tells us of the attitude of the fathers toward demonism in the following words: "Justin Martyr, Origen, Lactantius, Athanasius, and Minucius Felix, all in language equally solemn and explicit, call upon the pagans to form their own opinions from the confessions wrung from their own gods. We hear from them, that when a Christian began to pray, to make the sign of the cross, or to utter the name of his Master in the presence of a possessed or inspired person, the latter, by screams and frightful contortions, exhibited the torture that was inflicted, and by this torture the evil spirit was compelled to avow its nature. Several of the Christian writers declare that this was generally known to pagans."[6] Origen (185-254) said: "It is demons which produce famine, unfruitfulness, corruptions of the air, pestilence; they hover concealed in clouds in the lower atmosphere, and are attracted by the blood and incense which the heathen offer to them as gods." He thought, though, that Raphael had special care of the sick and the infirm. Cyprian (186-258) charged that demons caused luxations and fractures of the limbs, undermined the health, and harassed with diseases. Up to this time it was the privilege of any Christian to exorcise demons, but Pope Fabian (236-250) assigned a definite name and functions to exorcists as a separate order. To-day the priest has included in his ordination vows those of exorcist. Gregory of Nazianzus (329-390) declared that bodily pains are provoked by demons, and that medicines are useless, but that demoniacs are often cured by laying on of consecrated hands. St. Augustine (354-430) said: "All diseases of Christians are to be ascribed to these demons; chiefly do they torment fresh-baptized Christians, yea, even the guiltless new-born infants."