The Apostolic Tradition

Now a bishop must be above reproach, the husband of one wife, temperate, sensible, dignified, hospitable, an apt teacher, no drunkard, not violent but gentle, not quarrelsome, and no lover of money. 1 Tim. 3:2-3

This is why I left you in Crete, that you might amend what was defective, and appoint elders in every town as I directed you, if any man is blameless, the husband of one wife, and his children are believers and not open to the charge of being profligate or insubordinate. Titus 1:5-6