Sacrosanctum Concilium: The Sacred Liturgy
By John Graveline, Director of Parish Life
September 6, 2026
“They devoted themselves to the apostles’ instruction and the communal life, to the breaking of the bread and the prayers… those who believed shared all things in common; they would sell their property and goods, dividing everything on the basis of each one’s need. They went to the temple area together every day, while in their homes they broke bread. With exultant and sincere hearts they took their meals in common, praising God and winning the approval of all people. Day by day the Lord added to their number those who were being saved.”
Acts of the Apostles 2:42, 44-47
At the beginning of the Year of the Holy Spirit, this summer we have reflected upon the documents of Vatican Il. We have explored the questions: “Who are we as the Church?” “How are we as Catholic Christians related to political authorities and non-Catholics?” and “What is our mission as modern Catholics?” Today, we will consider our final Vatican Il document of the summer (although it was the first published at Vatican Il).
The Constitution on the Sacred Liturgy (also known by its Latin title Sacrosanctum Concilium) was the document that had the most impact internally within the Catholic Church. Over 60 years after its promulgation, it is still the most debated of the documents. If someone from 1955 traveled to our present day, how different would their experience of liturgy be! Gone would be the high altars, communion rails, confessional boxes, and Mass almost entirely in Latin audible only to the priest and his altar boys. This could rightfully have been the first Vatican Il document that we explored during this Year of the Holy Spirit, but I wanted to save it for last to highlight that Vatican Il’s reforms within the Church were for the sake of the Christian transformation of the entire world.
The essential elements and rituals of liturgy have remained constant from the time of Christ, but liturgy has many expressions in various times and places.
“The sacred Council has set out to impart an ever-increasing vigor to the Christian life of the faithful; to adapt more closely to the needs of our age those institutions which are subject to change; to foster whatever can promote union among all who believe in Christ; to strengthen whatever can help all people into the Church’s told. (Constitution on the Sacred Liturgy, no. 1) Liturgical reform and renewal have a long history in the Church. After Jesus’ Ascension, Eucharist was celebrated in homes and baptisms were performed in rivers, pools, or ritual baths. By the year 150, St. Justin Martyr describes many of the liturgical elements that we would recognize including proclamation of the scriptures, the bringing forward of gifts. prayers of thanksgiving over bread and wine, distribution of Eucharist (which he calls “the flesh and blood of incarnate Jesus”). During times of persecution in the Roman empire, liturgy was celebrated in catacombs, underground burial places of the martyrs. When Constantine became emperor and legalized Christianity. church buildings began to be built as well as religious monasteries. There were various prayers that grew out of local circumstances and customs (we remember that the Latin Rite is only one of 24 ritual expressions of Catholicism) and all Bibles and liturgical books were transcribed by hand. The essential elements and rituals of liturgy have remained constant from the time of Christ, but liturgy has many expressions in various times and places.
A major liturgical reform took place through the Council of Trent in the 16th century. The Protestant Reformers emphasized various aspects of Roman Catholic worship and rejected others whole-sale. The Tridentine liturgy responded to this situation by emphasizing aspects of Catholic belief and worship downplayed during the Reformation era. For example, Martin Luther emphasized the priesthood of all the baptized (to the detriment of the unique priesthood of the ordained clergy) and Eucharist as sacred meal (down-playing its sacrificial nature). Therefore, the Catholic Mass emphasized the unique role of the priest. Although never the official teaching of the Catholic Church, it was commonly held that the ordained priest alone offered the sacrifice of the Mass (usually behind a communion rail with closed doors on an altar built to resemble an altar of sacrifice rather than a meal table) and lay people were there merely as spectators at the priest’s Mass, often without responding to the prayers or receiving Holy Communion. Uniformity of worship was aided by the use of Latin and the ability to machine print approved liturgical books for wide distribution.
The key liturgical concept of the Constitution on the Sacred Liturgy was “that all the faithful should be led to that full, conscious, and active participation in liturgical celebrations.” (Constitution on the Sacred Liturgy, no. 14)
By the time of Vatican II in the mid-20th century, there already existed a robust liturgical movement that sought to reform Catholic liturgy by taking into account the entire liturgical tradition, not just since the Council of Trent. It sought to bring balance to liturgical worship, replacing an “either/or” approach to one of “both/and”: both Scripture and Tradition, Eucharist as both sacrifice and meal, unity in worship and cultural diversity, emphasis on baptismal priesthood and the call to holiness and the unique role of the ordained priesthood in the Church, etc. It also sought to make the liturgy more accessible and fruitful in the lives of modern women and men. This movement reached its climax at Vatican II.
The key liturgical concept of the Constitution on the Sacred Liturgy was “that all the faithful should be led to that full, conscious, and active participation in liturgical celebrations.” (Constitution on the Sacred Liturgy, no. 14) More avenues opened for lay people to assist the liturgy as Ministers of the Word, Extraordinary Ministers of the Eucharist, for women and men to perform service at the altar. These are welcome changes, but active participation in the liturgy is much more than serving in these roles. It is primarily through the liturgy that we are transformed into the living Body of Christ in our day and time. It is here that Christ continues to bring his healing and reconciliation to us. “By his power he is present in the sacraments so that when anybody baptizes it is really Christ himself who baptizes. He is present in his word since it is he himself who speaks when the holy scriptures are read in the Church.” It is Christ who offers himself as a sacrifice of love for our redemption and holiness at every Eucharist. (Constitution on the Sacred Liturgy, no. 7) Our active participation is first to encounter Christ in the liturgy, to receive the Grace that is offered through every liturgical action. “But in order that the liturgy may be able to produce its full effects it s necessary that the faithful come to it with proper dispositions, that their minds be attuned to their voices, and that they cooperate with heavenly grace lest they receive it in vain.” (Constitution on the Sacred Liturgy, no. 11) We express this interior, spiritual attitude by active listening, thoughtfully praying the prayers with conviction, signing the appropriate parts of the liturgy, and fully engaging our bodies in worship. Every liturgical reform arising from Vatican II, such as the reformed calendar of the liturgical year, the adoption of a three-year cycle of scripture readings, the use of local languages, calling for the altar to be freestanding to allow for the priest to face the assembly when offering the Eucharistic Prayer, etc. was for the sake of making it easier for us as modern people to consciously and actively encounter Jesus more deeply in the liturgy.
My fervent prayer for our parish is that more and more people consistently receive the riches of Grace available to us through the Mass and the other liturgical rites of the Church with hearts full of thanksgiving, that we are transformed by liturgy to become “other Christs” in our place and time, and that we go out each week to transform our world with the love, truth, compassion, peace, and light of Christ—a world so desperately in need of his light and life.
John