When a man is ordained to the priesthood he takes a vow of celibacy. This means he does not get married.

The celibacy is “for the sake of the kingdom” (1 Cor 7:32). According to the Catechism of the Catholic Church, priests are “called to consecrate themselves with undivided heart to the Lord and to ‘the affairs of the Lord’, they give themselves entirely to God and to men. Celibacy is a sign of this new life to the service of which the Church’s minister is consecrated; accepted with a joyous heart celibacy radiantly proclaims the Reign of God.” (CCC, 1579)

Pope Benedict XVI recently affirmed this in his Apostolic Exhortation on the Eucharist, Sacramentum Caritatis:

“The Synod Fathers wished to emphasize that the ministerial priesthood, through ordination, calls for complete configuration to Christ. While respecting the different practice and tradition of the Eastern Churches, there is a need to reaffirm the profound meaning of priestly celibacy, which is rightly considered a priceless treasure, and is also confirmed by the Eastern practice of choosing Bishops only from the ranks of the celibate. These Churches also greatly esteem the decision of many priests to embrace celibacy. This choice on the part of the priest expresses in a special way the dedication which conforms him to Christ and his exclusive offering of himself for the Kingdom of God.

“The fact that Christ himself, the eternal priest, lived his mission even to the sacrifice of the Cross in the state of virginity constitutes the sure point of reference for understanding the meaning of the tradition of the Latin Church. It is not sufficient to understand priestly celibacy in purely functional terms. Celibacy is really a special way of conforming oneself to Christ's own way of life. This choice has first and foremost a nuptial meaning; it is a profound identification with the heart of Christ the Bridegroom who gives his life for his Bride.

“In continuity with the great ecclesial tradition, with the Second Vatican Council and with my predecessors in the papacy, I reaffirm the beauty and the importance of a priestly life lived in celibacy as a sign expressing total and exclusive devotion to Christ, to the Church and to the Kingdom of God, and I therefore confirm that it remains obligatory in the Latin tradition. Priestly celibacy lived with maturity, joy and dedication is an immense blessing for the Church and for society itself.” (n24)