Lumen Gentium: The Light of Humanity
By John Graveline, Director of Parish Life
May 24, 2026
“[Jesus taught them, saying:] ‘You are the light of the world. A city built on a hill cannot be hid. No one after lighting a lamp puts it under the bushel basket, but on the lampstand, and it gives light to all in the house. In the same way, let your light shine before others, so that they may see your good works and give glory to your Father in heaven.’”
Matthew 5:14-16
Today, Pentecost Sunday, begins the Year of the Holy Spirit throughout the Diocese of Saginaw. In his letter of proclamation, Bishop Gruss stated, “This Year of the Holy Spirit is intended to deepen our diocesan mission of becoming ‘One Heart and Mind’ in carrying forward the Church’s solitary goal: to carry forward the work of Christ under the lead of the befriending Spirit.”
In last week’s column, I proposed that we prepare for the dawn of the Year of the Holy Spirit by reflecting on the Vatican II document The Dogmatic Constitution on the Church (also known by its Latin title Lumen Gentium). (Click here to read this document on the Vatican website.) To reflect on the meaning of what it means to be Church is appropriate on Pentecost. As Pope St. John Paul II stated in one of his teachings, “On Pentecost the Holy Spirit descends and the Church is born. The Church is the community of those who are begotten from above, by water and the Spirit, as we read in John’s Gospel (John 3:3, 5). The Christian community is not primarily the result of the free decision of believers; at its origin there is first and foremost the gratuitous initiative of the Love of God, who offers the gift of the Holy Spirit. The assent of faith to this gift of love is a response to grace and is itself motivated by grace. Therefore, between the Holy Spirit and the Church there exists a deep and indissoluble bond.”
Vatican II was very concerned with how the Church relates to all modern people and their problems, as distinct from the narrower perspective of its internal self-governance.
Vatican II’s Constitution on the Church is an incredibly rich document, and volumes upon volumes of commentary have been written about it. I would like to highlight just a few things for us to consider, each of us personally and for us as a parish community, as we contemplate what it means to be Church this Pentecost at the onset of this Year of the Holy Spirit. First is the Latin title itself, Lumen Gentium. This title translates to “the light of humanity.” Many church teachings about the nature of the Church at that time emphasized the aspect of the Church as “the mystical Body of Christ,” taking inspiration from St. Paul’s wonderful analogy of the Church as a body in his First Letter to the Corinthians. (1 Cor. 12:12-27) However, as I alluded to in last week’s column, Vatican II was very concerned with how the Church relates to all modern people and their problems, as distinct from the narrower perspective of its internal self-governance—although that was also addressed by the Council. Vatican II used this image of the Church as a beacon of light shining outward to guide all humanity as a key concept of what it means to be Church in our times. The Church, and therefore every parish and every disciple, is meant to reflect the Light of Christ, the Prince of Peace, in our wounded and hurting world.
Another emphasis in the Constitution on the Church is that the Church is the People of God. In a world that seems divided between the sociological concepts of isolated individualism that tends toward selfishness or of state-enforced collectivism which often does not respect people’s human rights, the Church is a model of human solidarity for God has chosen to save us “not as individuals with out any bond or link . . . but rather to make them into a people who might acknowledge him and serve him in holiness.” (no. 9) The Church is not just a building where we all meet, but the church building is a sign of the people God has formed from living stones, with Christ as our cornerstone. (1 Peter 2:4-10) We are the Church, fashioned into unity by the Love of God. Every other human organization that I can think of is formed or dissolved by the will of its members. We tend to congregate with those like us. But as the novelist James Joyce wrote, to be Catholic means “here comes everyone” because God is the initiator of the communion of the Church, and invitation for all people. (John 1:12-13, Matthew 28:19-20) Thus, “the Church is seen to be a people brought into unity from the unity of the Father, the Son, and the Holy Spirit.” (no. 4)
A Church comprised of Catholics who attend Mass occasionally, throw a few dollars in the collection basket, and live their lives indistinguishably from those who do not believe will not be the beacon of light and hope needed in our world.
Another emphasis of Vatican II’s Constitution on the Church is the centrality of the Universal Call to Holiness. To live a life of holiness means to live in communion and love with God and with all people. This is not just for priests, nuns, and other “professional” religious people for “all Christians in any state or walk of life are called to the fullness of Christian life and to the perfection of love, and by this holiness a more human manner of life is fostered also in earthly society.” (no. 40) The challenges of our modern world cannot be met by only a few religious people. Our world needs saints! A Church comprised of Catholics who attend Mass occasionally, throw a few dollars in the collection basket, and live their lives indistinguishably from those who do not believe will not be the beacon of light and hope needed in our world. Film director Francis Ford Coppola once commented about the pre-Vatican II Catholicism in which he grew up as “to do one thing and believe another seemed very Catholic to me.” He famously dramatized this point in the baptism scene in his film The Godfather.
Only Christians who are rooted in the eternal life given to them in Baptism and the other Sacraments, responding to this Grace by lives of compassion, justice, charity, and service can transform our society and world. The Constitution on the Church concludes by pointing us in the direction of the one who perfectly models for us what it means to be Church, our parish patroness the Blessed Virgin Mary. Since she carried the Body of Christ and gave birth to him into the world, she is the Mother of the Church, the mystical Body of Christ in our place and time, the time of the outpouring of the Holy Spirit. May her example of receiving the Word of the Lord, letting the presence of God fill her completely, and her sharing of Christ with the world be our model of holiness: listening to and heeding the Word, receiving the gifts of God as grateful and generous stewards, and sharing the Good News of salvation with all people. On the Monday after Pentecost, we celebrate liturgically the memorial of Mary, Mother of the Church. May we place our discipleship, both personally and as a community of faith, under her mantle for our healing and the healing of our world.
This week, I would propose that we continue to reflect on the question “Who are we as a Church?” by reading the Vatican II document The Decree on the Apostolate of Lay People. It’s also known by its Latin title Apostolicam actuositatem. Click here to read this document on the Vatican website.
John