The whole liturgical life of the Church revolves around the Eucharistic sacrifice and the sacraments. (CCC 1113)
The word "liturgy" comes from the Greek term meaning "public work or work done on behalf of the people." Liturgy is always communal prayer, for this is "holy work". Every liturgical celebration is the action of Christ, the High Priest, and his mysical body, which is the Church.
It therefore requires the participation of the People of God in the work of God.
All liturgy is centered on the Holy Trinity, for all our worship is directed to the Father, from whom all blessings come, through the Son in the unity of the Holy Spirit.
Through the liturgical celebrations of the Church, we participate in the Paschal Mystery of Christ, that is, his passing through death from this life into eternal glory. The liturgies of the Church also help to teach us about Jesus and the meaning of the mysteries we celebrate.
See the links of the left for information about our Seven Sacraments--which were instituted by Jesus Christ to give us the grace we need in this world so as to prepare for eternal life.