St. Paul even says it’s better to be celibate (remember, St. Paul himself is celibate):
1 Cor.7:7 For I would that all men were even as myself: but every one hath his proper gift from God; one after this manner, and another after that. 8 But I say to the unmarried, and to the widows: It is good for them if they so continue, even as I.
31 And they that use this world, as if they used it not: for the fashion of this world passeth away.
32 But I would have you to be without solicitude. He that is without a wife, is solicitous for the things that belong to the Lord, how he may please God.
33 But he that is with a wife, is solicitous for the things of the world, how he may please his wife: and he is divided.
From CA:
catholic.com/library/Celibacy_and_the_Priesthood.asp
This interpretation leads to obvious absurdities. For one, if “the husband of one wife” really meant that a bishop
had to be married, then by the same logic “keeping his children submissive and respectful in every way” would mean that he
had to have children. Childless husbands (or even fathers of only
one child, since Paul uses the plural) would not qualify.
In fact, following this style of interpretation to its final absurdity, since Paul speaks of bishops meeting these requirements (not of their
having met them, or of
candidates for bishop meeting them), it would even follow that an ordained bishop whose wife or children died would become unqualified for ministry! Clearly such excessive literalism must be rejected.
The theory that Church leaders must be married also contradicts the obvious fact that Paul himself, an eminent Church leader, was single and happy to be so. Unless Paul was a hypocrite, he could hardly have imposed a requirement on bishops which he did not himself meet. Consider, too, the implications regarding Paul’s positive attitude toward celibacy in 1 Corinthians 7: the married have worldly anxieties and divided interests, yet
only they are qualified to be bishops; whereas the unmarried have single-minded devotion to the Lord, yet are barred from ministry!