Poor choice of the word "must" in your paraphrase. A more accurate choice would have been the use of "could".
"It behoveth therefore a bishop to be blameless, the husband of one wife, sober, prudent, of good behaviour, chaste, given to hospitality, a teacher," 1 Timothy 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." St. Jerome commentary on 1 Timothy 3:2, circa 400 AD.
must was a bad choice of wording. No scripture in front of me when writing.