Hi Jiggfly,
In 1 Timothy 3, St. Paul is telling Timothy the kind of character a bishop or priest should have. St. Paul is not making marriage a requirement because he himself is single and even stated that it is good to be single (1 Corinthians 7:32-34). St. Paul was single and he never got married. St. Paul said the following:
1 Timothy 3:1-5 A faithful saying: if a man desire the office of a bishop, he desireth a good work. It behoveth therefore a bishop to be blameless, the husband of one wife, sober, prudent, of good behaviour, chaste, given to hospitality, a teacher, Not given to wine, no striker, but modest, not quarrelsome, not covetous, but One that ruleth well his own house, having his children in subjection with all chastity. But if a man know not how to rule his own house, how shall he take care of the church of God?
In the following verses above, St. Paul was referring to the character of the bishop. He is not saying that it is a requirement that the bishop be married. He meant that in the case of marriage, the bishop should be married to only one wife (not two or three). In those days, it was common to have more than one wife (especially among the pagans). Polygamy is considered against God's law, and 1 Timothy 3:2 is one of the biblical verses that Catholics use to show that marriage is between only one man and one woman.
In Christ,
Selene