CATECHISM OF THE CATHOLIC CHURCH
SECOND EDITION

Paragraphs 1132–1136

1132 The Church celebrates the sacraments as a priestly community structured by the baptismal priesthood and the priesthood of ordained ministers.
1133 The Holy Spirit prepares the faithful for the sacraments by the Word of God and the faith which welcomes that word in well-disposed hearts. Thus the sacraments strengthen faith and express it.
1134 The fruit of sacramental life is both personal and ecclesial. For every one of the faithful on the one hand, this fruit is life for God in Christ Jesus; for the Church, on the other, it is an increase in charity and in her mission of witness.
1135 The catechesis of the liturgy entails first of all an understanding of the sacramental economy (Chapter One). In this light, the innovation of its celebration is revealed. This chapter will therefore treat of the celebration of the sacraments of the Church. It will consider that which, through the diversity of liturgical traditions, is common to the celebration of the seven sacraments. What is proper to each will be treated later. This fundamental catechesis on the sacramental celebrations responds to the first questions posed by the faithful regarding this subject:

- Who celebrates the liturgy?

- How is the liturgy celebrated?

- When is the liturgy celebrated?

- Where is the liturgy celebrated?

1136 Liturgy is an "action" of the whole Christ (Christus totus). Those who even now celebrate it without signs are already in the heavenly liturgy, where celebration is wholly communion and feast.