▼3:2The expression ‘husband of one wife’ has an idiomatic meaning, that he be a devoted husband; the literal meaning also applies, he should not be a man who has married more than once. In the early Church, many Church leaders had converted during their adult life, so many were already married; thus, it was necessary to permit a married man to be a Bishop. Very soon in the history of the Church, the Holy Spirit wisely guided the faithful to prefer celibate men for the Episcopate.(Conte)

▼3:2 Of one wife: The meaning is not that every bishop should have a wife (for St. Paul himself had none), but that no one should be admitted to the holy orders of bishop, priest, or deacon, who had been married more than once.(Challoner)