IgnatiusNo man who is responsible for defiling a household can expect any share in the kingdom of God. Even in the world, defilement of this kind is punishable with death; how much more when a man’s subversive doctrines defile the God-given faith for which Jesus Christ was crucified. Such a wretch in his uncleanness is bound for the unquenchable fire, and so is anyone else who gives him a hearing.

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– St Ignatius of Antioch, Letter to the Ephesians §16