“Avoid heretics like wild beasts; for they are mad dogs, biting secretly. You must be on your guard against them; their bite is not easily cured. There is only one physician [who can cope with it], a physician who is at once fleshly and spiritual, generate and ingenerate, God in man, true life in death, born of Mary and of God, first passible then impassible, Jesus Christ our Lord.”
(St Ignatius of Antioch ‘To the Ephesians’)