1 Timothy 3:2

Clement of Alexandria Stromata Book III

Quid autem ad haec dicunt, qui in legem invehuntur, et in matrimonium, quasi sit solum a lege concessum, non autem etiam in Novo Testamento? Quid ad has leges latas possunt dicere, qui sationem abhorrent et generationem? cure "episcopum" quoque, "qui domui recte praesit,"[229]

Constitutions of the Holy Apostles Book II

Such a one a bishop ought to be, who has been the "husband of one wife,"[14]

Constitutions of the Holy Apostles Book VI

We have already said, that a bishop, a presbyter, and a deacon, when they are constituted, must be but once married, whether their wives be alive or whether they be dead; and that it is not lawful for them, if they are unmarried when they are ordained, to be married afterwards; or if they be then married, to marry a second time, but to be content with that wife. which they had when they came to ordination.[86]