Now these demons, if they see all Christians—and especially monks—joyfully laboring and making progress, first attack by attempting to place stumbling blocks in their way. Their stumbling blocks are filthy thoughts.[1] But there is no need for us to fear the things they throw at us; through prayer and fasting and faith in the Lord the demons immediately fall. Having fallen, however, they do not stop but advance once more with deceit and cunning. Since they have been unable to deceive the heart openly through filthy pleasure, they renew their attacks on it by other means. From this point on, fabricating apparitions, they pretend to frighten us by changing their shapes and taking on the appearance of women, wild beasts, reptiles and huge bodies and legions of soldiers.
Nevertheless, we need have no fear at all of their apparitions, for they are nothing, and they disappear in a hurry, especially if each person protects himself with faith and the sign of the cross. But they are brazen and completely shameless, for even if they are defeated by these means they attack again by some other method. They act like soothsayers, saying they can predict the future, and they make themselves as tall as the roof and as wide as a house so that by illusions of this sort they can carry away those whom they have been unable to deceive by thoughts. But if they find that the soul has been secured with faith and hopeful resolve, then they bring in their leader. LIFE OF ST.