“Adhering to the teaching of the Holy Scriptures, to the apostolic traditions, and to the consensus . . . of the Fathers,” we profess that “the sacraments of the new law were . . . all instituted by Jesus Christ our Lord.” Jesus’ words and actions during his hidden life and public ministry were already salvific, for they anticipated the power of his Paschal mystery. They announced and prepared what he was going to give the Church when all was accomplished. The mysteries of Christ’s life are the foundations of what he would henceforth dispense in the sacraments, through the ministers of his Church, for “what was visible in our Savior has passed over into his mysteries.”
Sacraments are “powers that comes forth” from the Body of Christ, which is ever-living and life-giving. They are actions of the Holy Spirit at work in his Body, the Church. They are “the masterworks of God” in the new and everlasting covenant. The sacraments are “of the Church” in the double sense that they are “by her” and “for her.” They are “by the Church,” for she is the sacrament of Christ’s action at work in her through the mission of the Holy Spirit. They are “for the Church” in the sense that “the sacraments make the Church,” since they manifest and communicate to men, above all in the Eucharist, the mystery of communion with the God who is love, One in three persons. Forming “as it were, one mystical person” with Christ the head, the Church acts in the sacraments as “an organically structured priestly community.” Through Baptism and Confirmation the priestly people is enabled to celebrate the liturgy, while those of the faithful “who have received Holy Orders, are appointed to nourish the Church with the word and grace of God in the name of Christ.”
Christ sent his apostles so that “repentance and forgiveness of sins should be preached in his name to all nations.” “Go therefore and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit.” The mission to baptize, and so the sacramental mission, is implied in the mission to evangelize, because the sacrament is prepared for by the word of God and by the faith which is assent to this word: The People of God is formed into one in the first place by the Word of the living God. . . . The preaching of the Word is required for the sacramental ministry itself, since the sacraments are sacraments of faith, drawing their origin and nourishment from the Word.
The Church’s faith precedes the faith of the believer who is invited to adhere to it. When the Church celebrates the sacraments, she confesses the faith received from the apostles – whence the ancient saying: lex orandi, lex credendi. The law of prayer is the law of faith: the Church believes as she prays. Liturgy is a constitutive element of the holy and living Tradition. (CCC 1114-1121)