Besides such invocations of the names of God, as we have mentioned above, the Exorcist used set forms of prayer “collected out of the Holy Scriptures.”  Their effect, as described by Cyril, is to “set the soul, as it were, on fire,” and scare the evil spirit away; and his meaning may be illustrated by a passage of Tertullian, who says Apologet. c. 23.:  “All the authority and power we have over them is from naming the name of Christ, and recalling to their memory the woes with which God threatens them at the hands of Christ as Judge.…So at our touch and breathing, overwhelmed by the thought of those judgment-fires, they leave the bodies they have entered, at our command, unwilling and distressed, and before your very eyes put to an open shame.”