Desert Fathers, on 1Tim 4:16

“Take heed to thyself and to doctrine: be earnest in them. For in doing this thou shalt both save thyself and them that hear thee.”

“[Syncletica] also said, 'It is dangerous for a man to try teaching before he is trained in the good life. A man whose house is about to fall down may invite travellers inside to refresh them, but instead they will be hurt in the collapse of the house. It is the same with teachers who have not carefully trained themselves in the good life; they destroy their hearers as well as themselves. Their mouth invites to salvation, their way of life leads to ruin.'”

Imported from an open dataset — not yet checked against the printed edition.