Pyrobolia, seu de ignitis Sathanae telis, commonefactio theologica

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A memorable saying of Pope Leo exists concerning the temptations of Satan: The ancient enemy never ceases to spread the snares of his deceptions everywhere; and, in order to corrupt the faith of believers in any way possible, he persists. He knows to whom he should apply the heat of desires; to whom he should introduce the enticements of gluttony; to whom he should present the incitement of lust; to whom he should pour the poison of envy. He knows whom to shake with sorrow; whom to deceive with joy; whom to oppress with fear; whom to seduce with admiration. He examines the habits of all; he fans the cares; he investigates the affections; and he seeks the causes of harm where he sees anyone occupied with excessive zeal.

For, as that Vincent of Beauvais a 13th-century Dominican friar and encyclopedist rightly warns in this regard, he is most subtle in intellect, most cunning in malice, most practiced by the experience of the longest time, most brazen in audacity, most swift in movement, indefatigable in doing harm, insatiable in destroying, implacable in sparing, horrible in meditation, intolerable in enduring, invisible to the eye; and because of all these worst conditions, he is to be feared most highly.

Since, however, the most certain protection against the κυβείαν trickery/deceit, wiles, and force of Satan is He who was revealed to dissolve the works of the Devil, CHRIST, living by faith in our hearts