Catechism of the Catholic Church

1071 As the work of Christ liturgy is also an action of his Church. It makes the Church present and manifests her as the visible sign of the communion in Christ between God and men. It engages the faithful in the new life of the community and involves the "conscious, active, and fruitful participation" of everyone. ⁹

1072 "The sacred liturgy does not exhaust the entire activity of the Church": ¹⁰ it must be preceded by evangelization, faith, and conversion. It can then produce its fruits in the lives of the faithful: new life in the Spirit, involvement in the mission of the Church, and service to her unity.