Why Priests Don't Marry
The question
Isn't priestly celibacy unbiblical, even unhealthy — Peter was married, after all?
Scripture · Matthew 19:12
There are eunuchs who have made themselves eunuchs for the sake of the kingdom of heaven. He who is able to receive this, let him receive it.
A short answer
The objection has real bite: Peter clearly had a mother-in-law (Mark 1:30), Paul says a bishop should be "the husband of one wife" — so where does mandatory celibacy come from? Start with Jesus Himself, who was celibate, and who openly praised those who renounce marriage "for the sake of the kingdom of heaven" (Matthew 19:12). He doesn't command it, but He commends it as a genuine calling, not a burden imposed against nature.
Paul, also unmarried, makes the practical case. "The unmarried man is anxious about the affairs of the Lord, how to please the Lord," while the married man is rightly divided between God and family (1 Corinthians 7:32-35). Paul even wishes others could share his freedom for total devotion. So celibacy isn't a rejection of marriage — Paul calls marriage good — it's choosing to be wholly available to God and His people, a living sign of the kingdom where we're all ultimately wed to Christ.
Here's the key: celibacy is a discipline, not a dogma (CCC 1579). The Church can and does ordain married men in the Eastern Catholic Churches and certain converts. The Latin Church embraces celibacy as a gift that frees a priest to be a spiritual father to everyone, fully spent for the flock. It's not anti-marriage. It's a different kind of total love.