What is Liturgy? Liturgy literally means "the work of the people" it is which public religious worship, especially Christian worship.
Mass as sacrifice. The Eucharist is a true sacrifice. The first Christians knew that it was a sacrifice and proclaimed this in their writings. They recognized the sacrificial character of Jesus’ instruction, "Do this in remembrance of me.
Community and Liturgy. the Body of Christ united with its Head, that celebrates. Liturgical services are not private functions but are celebrations of the Church which is the sacrament of unity. Liturgical services pertain to the whole Body of the Church. But they also touch individual members of the Church
Liturgical Diversity in the Church. The diverse liturgical traditions or rites, legitimately recognized, manifest the catholicity of the Church, because they signify and communicate the same mystery of Christ.