On St. Anthony’s Relations with the Heterodox

St. Anthony the GreatSt. Athanasius the Great ca. 297-373

…[H]e was altogether wonderful in faith and religious, for he never held communion with… schismatics, knowing their wickedness and apostasy from the beginning; nor had he friendly dealings with the Manichæans or any other heretics; or, if he had, only as far as advice that they should change to piety. For he thought and asserted that intercourse with these was harmful and destructive to the soul. In the same manner also, he loathed the heresy of the Arians, and exhorted all neither to approach them nor to hold their erroneous belief… saying that their words were worse than the poison of serpents. (Life of St. Anthony, 68)