Teaching on Holy Orders: THE SACRAMENTS AT THE SERVICE OF COMMUNION
Baptism, Confirmation, and Eucharist are sacraments of Christian initiation. They ground the common vocation of all Christ’s disciples, a vocation to holiness and to the mission of evangelizing the world. They confer the graces needed for the life according to the Spirit during this life as pilgrims on the march towards the homeland (CCC 1533).
Two other sacraments, Holy Orders and Matrimony, are directed towards the salvation of others; if they contribute as well to personal salvation, it is through service to others that they do so. They confer a particular mission in the Church and serve to build up the People of God (CCC 1534).
Through these sacraments those already consecrated by Baptism and Confirmation for the common priesthood of all the faithful can receive particular consecrations. Those who receive the sacrament of Holy Orders are consecrated in Christ’s name “to feed the Church by the word and grace of God.”2 On their part, “Christian spouses are fortified and, as it were, consecrated for the duties and dignity of their state by a special sacrament” (CCC 1535).
Three Degrees of Holy Orders:
“The divinely instituted ecclesiastical ministry is exercised in different degrees by those who even from ancient times have been called bishops, priests, and deacons.” Catholic doctrine, expressed in the liturgy, the Magisterium, and the constant practice of the Church, recognizes at 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. For this reason the term sacerdos in current usage denotes bishops and priests but not deacons. Yet Catholic doctrine teaches that the degrees of priestly participation (episcopate and presbyterate) and the degree of service (diaconate) are all three conferred by a sacramental act called “ordination,” that is, by the sacrament of Holy Orders (CCC 1554):