Priesthood and vocation · Question 6
“There are married priests — so is celibacy God's law or a Church rule?”

The question: “Peter himself was married, so why does the Latin Church forbid it?”
The Church's answer: Priestly celibacy is not an essential condition of ordination, nor a divine law applied in the same way across every Catholic Church. The Latin Church ordinarily ordains celibate men as a sign of giving oneself wholly to Christ and serving the community. The Eastern Catholic Churches have a tradition of ordaining married men, and in particular cases the Latin Church has married priests as well. Marriage and celibacy are both honored vocations.
If they press further: “So could the rule be scrapped tomorrow?” — Church authority can weigh a discipline, but it has to discern a long spiritual and pastoral tradition and the real effects carefully. An individual ignoring the discipline through a secret marriage or a double life is a different matter from a community reviewing that discipline openly.
In one sentence: “Priestly celibacy is a discipline the Latin Church treasures, not an absolute essence of ordination, and there are married priests within Catholicism too.”