The Most Holy Trinity - Year A - 10 Things To Know About the Holy Trinity & “10 Songs for Mary”

The mystery of the Holy Trinity is at the very heart of our Catholic faith. Every time we make the Sign of the Cross, pray the Gloria, or celebrate the Mass, we profess our belief in the Father, the Son, and the Holy Spirit. While the Trinity is a mystery beyond our complete understanding, God has revealed enough for us to know, love, and worship Him more deeply.

1. There Is Only One God

Catholics do not believe in three gods. We believe in one God. This is the foundational truth of our faith, inherited from God's revelation to Israel: "Hear, O Israel: The Lord our God is one Lord" (Deuteronomy 6:4). The Trinity does not divide God into three parts; God is one in being.

2. God Exists as Three Divine Persons

Within the one God are three distinct Persons: the Father, the Son, and the Holy Spirit. Each Person is fully and completely God, sharing the same divine nature. They are distinct in their relationships, yet perfectly united in essence and will.

3. The Father Is God

The Father is the source and origin within the Trinity—not in the sense that He existed before the Son or the Spirit, but as the One who eternally begets the Son and from whom the Holy Spirit proceeds. The Father is the Creator who lovingly calls all things into existence.

4. The Son Is God

Jesus Christ is not merely a holy man, prophet, or teacher. He is the eternal Son of God who became man for our salvation. As we profess in the Creed, He is "God from God, Light from Light, true God from true God." Through His life, death, and resurrection, He reveals the Father's love to the world.

5. The Holy Spirit Is God

The Holy Spirit is not simply a force or symbol of God's presence. He is the Third Person of the Trinity, fully divine and worthy of worship. The Holy Spirit dwells within believers, sanctifies the Church, and guides us into all truth.

6. The Trinity Is Revealed Throughout Scripture

Although the word "Trinity" does not appear in the Bible, the reality of the Trinity is revealed throughout Scripture. At Jesus' baptism, the Son stands in the Jordan, the Holy Spirit descends like a dove, and the Father's voice is heard from heaven. Before His Ascension, Jesus commands His disciples to baptize "…in the name of the Father, and of the Son, and of the Holy Spirit" (Matthew 28:19).

7. The Trinity Is a Mystery of Faith

A mystery in the Catholic sense is not something impossible or irrational; it is a truth so profound that it exceeds the limits of human understanding. We cannot fully comprehend the Trinity, but we can truly know what God has revealed about Himself.

8. The Trinity Is a Communion of Perfect Love

God is not solitary. From all eternity, the Father, Son, and Holy Spirit live in a perfect communion of love. This eternal exchange of divine love reveals why we are created for relationship—with God and with one another.

9. We Are Baptized Into the Life of the Trinity

At Baptism, we are not simply welcomed into a community; we are drawn into the very life of God. Through grace, we become adopted children of the Father, members of Christ's Body, and temples of the Holy Spirit. The Christian life is participation in the life of the Trinity.

10. The Trinity Is Meant to Be Lived, Not Just Studied

The doctrine of the Trinity is not merely a theological concept for scholars. It shapes every aspect of Christian life. We pray to the Father, through the Son, in the Holy Spirit. We begin and end our prayers in the name of the Trinity. The more we grow in holiness, the more deeply we enter into the life and love of the Triune God.

The Holy Trinity is not a puzzle to be solved but a mystery to be adored. Every Mass, every sacrament, and every prayer draws us into the life of the Father, the Son, and the Holy Spirit. As Catholics, we are called not only to believe in the Trinity but to live in communion with the Triune God who created us, redeemed us, and sanctifies us.

"Glory be to the Father, and to the Son, and to the Holy Spirit; as it was in the beginning, is now, and ever shall be, world without end. Amen."

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In honor of the Blessed Virgin Mary, the Sunday 7pm Choir offers a new collection of ten beloved Marian hymns — a treasury of the Church's most cherished prayers and songs to Our Lady, from ancient Latin antiphons to timeless devotional classics, all woven together as an act of love and praise for the Mother of God.

This Marian video collection is being released in conjunction with the Sunday 7pm Choir's musical support of "A Day With Mary", a one-day, family-friendly outdoor event bringing together Catholics from across the Archdiocese of Toronto on Saturday, May 30, 2026 at Villanova College in King City, Ontario.

The day will include Mass, the Rosary and opportunities to grow in devotion to Our Lady. Adults are invited to a keynote address by Dr. Josephine Lombardi, while children will enjoy engaging activities led by the Catechesis of the Good Shepherd. “A Day With Mary” will also feature music by Sunday 7pm Choir, food and fellowship. We hope you will join His Eminence Frank Cardinal Leo and many others who share a love for the Blessed Mother.

If you happen to be attending this event, please come by and say hi!

Video can be watched by clicking here or by clicking on the thumbnail below.