Why do Catholics have liturgy in the Mass?

The liturgy in the Mass is one of the most important aspects of the Catholic faith because it is the means by which the faithful participate in Christ's redemptive work in a tangible and spiritual way. The word "liturgy" comes from the Greek "leitourgia," meaning "public work" or "service." In the Catholic Church, the liturgy in the Mass is not just a series of rituals but a living and current celebration of the redemption that Jesus accomplished for us. This is why the Mass is considered the high point of Christian life, where the faithful unite with Christ in His Passion, Death, and Resurrection.

The Mass is divided into two main parts: the Liturgy of the Word and the Liturgy of the Eucharist. In the Liturgy of the Word, Catholics hear Sacred Scripture, which is the living and effective Word of God. "For the word of God is alive and active, sharper than any double-edged sword" (Hebrews 4:12). This part of the Mass allows the faithful to meditate on the Scriptures and the truths of the faith. The highlight of this liturgy is the proclamation of the Gospel, where Christ speaks directly to the heart of the community.

The second part, the Liturgy of the Eucharist, is the moment when the bread and wine are consecrated, becoming the Body and Blood of Christ. Jesus instituted the Eucharist at the Last Supper when He said, "This is My body, which is given for you; do this in memory of Me" (Luke 22:19). Here, Catholics actively participate in Christ's sacrifice, offered in an unbloody manner on the altar. The Liturgy of the Eucharist is the center of the Mass, as in it, Christ offers Himself again for us, and the faithful are invited to unite with this sacrifice.

The liturgy in the Mass is not merely a symbolic act or a remembrance of past events. It is a real participation in the Paschal Mystery, where the faithful become contemporaries of Christ's salvific events. As St. Paul says, "Every time you eat this bread and drink this cup, you proclaim the Lord's death until He comes" (1 Corinthians 11:26). Thus, the Mass is an encounter with Christ Himself, who is made truly present, especially in the Eucharist, but also in the gathered community, the presiding priest, and the proclaimed Word.

Furthermore, the liturgy in the Mass strengthens the communion among the faithful. As members of the Body of Christ, they do not participate in the Mass as isolated individuals but as a community united by faith. "For where two or three are gathered in My name, I am there among them" (Matthew 18:20). The Mass is, therefore, a communal act that expresses the Church's unity and its vocation to worship God as one body.

The liturgy in the Mass reflects the heavenly worship. In Revelation, John describes the liturgy of Heaven, where saints and angels continually praise God: "Worthy is the Lamb who was slain, to receive power and riches and wisdom and strength and honor and glory and blessing" (Revelation 5:12). Thus, by participating in the Mass, the faithful join the eternal worship of God, anticipating the fullness of heavenly life.