The First Apology of Justin

For we forewarn you to be on your guard, lest those demons whom we have been accusing should deceive you, and quite diver you from reading and understanding what we say. For they strive to hold you their slaves and servants; and sometimes by appearances in dreams, and sometimes by magical impositions, they subdue all who make no strong opposing effort for their own salvation. And thus do we also, since our persuasion by the Word, stand aloof from them (i.e., the demons), and follow the only unbegotten God through His Son.