The overseer therefore must be without reproach, the husband of one wife, temperate, sensible, modest, hospitable, good at teaching;
(52) “Νηφάλιον, ‘vigilant or circumspect.’ In which sense the word occurs in the later writers; as, for instance, Phavorinus. The force of the word is well expressed by the Pesch. Syr., ‘mente sit vigilanti ’ Instead of νηφάλιον, (the reading of many of the best MSS. and all the early editions,) νηφάλεον was introduced by Beza, but without any sufficient reason; and the former has been rightly restored by Wetstein, Griesbach, Matthaei, Tittnhann, and Vater. Here, then, we have a quality suggested by the very term ἐπίσχοπος, which imports vigilant superintendence.” — Bloomfield. 