How are bishops, priests and deacons different? Why are they ordained ministers through Holy Orders?


By ordination to the episcopacy, bishops receive the fullness of the Sacrament of Holy Orders and become successors of the Apostles. Through this Sacrament, a bishop belongs to the college of bishops and serves as the visible head or pastor of the local church entrusted to his care. As a college, the bishops have care and concern for the apostolic mission of all the churches in union with and under the authority of the Pope—the head of the college of bishops, the Bishop of Rome, and the successor of St. Peter.


By ordination, “priests are united with the bishops in [priestly] dignity and at the same time depend on them in the exercise of their pastoral functions; they are called to be the bishops’ prudent co-workers” (CCC, no. 1595). With the bishop, priests form a presbyteral (priestly) community and assume with him the pastoral mission for a particular parish. The bishop appoints priests to the pastoral care of parishes and to other diocesan ministries. The priest promises obedience to the bishop in service to God’s people.


The title deacon comes from the Greek word diakonia meaning “servant.” A deacon has a special attachment to the bishop in the tasks of service and is configured to Christ, the Deacon—or Servant—of all (cf. CCC, nos. 1569-1570).

“There are two degrees of ministerial participation in the priesthood of Christ: the episcopacy and the presbyterate. The diaconate is intended to help and serve them” (CCC, no. 1554). The three degrees of the Sacrament of Holy Orders—bishop, priest, and deacon—are all conferred by ordination.

Deacons receive the Sacrament of Holy Orders from a bishop and are ordained not to the ministerial priesthood but to the ministry of service. Through ordination the deacon is conformed to Christ, who came to serve, not to be served. In the Latin Church, deacons may baptize, proclaim the Gospel, preach the homily, assist the bishop or priest in the celebration of the Eucharist, assist at and bless marriages, and preside at funerals. They dedicate themselves to charitable endeavors, which was their ministerial role in New Testament times.

Whether they are involved in the Church’s liturgical or pastoral life or in her social and charitable endeavors, deacons are “strengthened by the imposition of hands that has come down from the apostles. They would be more closely bound to the altar and their ministry would be made more fruitful through the sacramental grace of the diaconate” (AG, 16, no. 6).

Since the Second Vatican Council, the Latin Church has restored the diaconate as a permanent rank of the hierarchy. Now, diaconate as a permanent office may also be conferred on both married and unmarried men. The Eastern Churches have always retained it. Seminarians preparing for priesthood have always been ordained to the diaconate before ordination to priesthood.

You can read more from the United States Catholic Catechism for Adults, order your own copy, or read questions about it at the United States Conference of Catholic Bishops website.

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