Proverbs 17:4

21. But for the rest, let our most beloved brethren firmly decline, and avoid the words and conversations of those whose word creeps onwards like a cancer; as the apostle says, “Evil communications corrupt good manners.” And again: “A man that is an heretic, after one admonition, reject: knowing that he that is such is subverted, and sinneth, being condemned of himself.” And the Holy Spirit speaks by Solomon, saying, “A perverse man carrieth perdition in his mouth; and in his lips he hideth a fire.” Also again, he warneth us, and says, “Hedge in thy ears with thorns, and hearken not to a wicked tongue.” And again: “A wicked doer giveth heed to the tongue of the unjust; but a righteous man does not listen to lying lips.” And although I know that our brotherhood there, assuredly fortified by your foresight, and besides sufficiently cautious by their own vigilance, cannot be taken nor decei …

7. You say, indeed, that the scruple into which you have fallen ought to be taken from your mind. You have fallen into it, but it was by your irreligious credulity. You have fallen into it, but it was by your own sacrilegious disposition and will in easily hearkening to unchaste, to impious, to unspeakable things against your brother, against a priest, and in willingly believing them in defending other men’s falsehoods, as if they were your own and your private property; and in not remembering that it is written, “Hedge thine ears with thorns, and hearken not to a wicked tongue;” and again: “A wicked doer giveth heed to the tongue of the unjust; but a righteous man regards not lying lips.” Wherefore have not the martyrs fallen into this scruple, full of the Holy Ghost, and already by their passion near to the presence of God and of His Christ; martyrs who, from their dungeon, directed le …