Chapter 41 — Part IV: Prayer — The Seventh Petition: Deliver Us from Evil
Section 25. Deliverance From Satan Especially Asked For — According to the interpretation of St. Basil the Great, St. Chrysostom and St. Augustine, the devil is specially called the evil one, because he was the author of man's transgression, that is, of his sin and iniquity, and also because God makes use of him as an instrument to chastise sinful and impious men. For the evils which mankind endures in punishment of sin are appointed by God; and this is the meaning of these words of Holy Writ: Shall there be evil in a city which the Lard hath not done? and: I am the Lord and there is none else: I form the light and create darkness: I make peace and create evil.