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 Most Holy Trinity Sunday, Year A: Homily by Fr Isaac Chima

Theme: The Blessed Trinity: The Loving God Who Lives With Us

Readings: Ex 34:4b–6, 8–9; 2 Cor 13:11–13; Jn 3:16–18

Dear brothers and sisters in Christ, today we celebrate the solemnity of one of the greatest mysteries of our Christian faith: the mystery of the Most Holy Trinity. This celebration reminds us that the Father, the Son, and the Holy Spirit are one. It teaches us that there are three distinct Persons in one God, sharing the same Divine Nature. They are co‑equal and co‑eternal. Each Person of the Trinity is fully God, yet there is only one God. They are one in substance, distinct in Persons and functions, yet perfectly united in purpose.

Although the word Trinity does not appear in the Bible, the teachings of Jesus clearly point to the reality of the existence of the Blessed Trinity—especially when He commanded: “Go into the world and baptize them in the name of the Father, and of the Son, and of the Holy Spirit” (Mt 28:19). St Paul also reveals this unity in today’s second reading when he prays: “The grace of the Lord Jesus Christ, the love of God, and the fellowship of the Holy Spirit be with you all.”

The doctrine of the Blessed Trinity is a truth that no amount of philosophical or scientific research can fully explain or disprove. It is a mystery—one that goes beyond the full grasp of the human mind. Indeed, the very nature of God is beyond our full comprehension. This is why God says through the prophet Isaiah (55:8–9): “My thoughts are not your thoughts, and my ways are not your ways… as the heavens are high above the earth, so are my ways above your ways and my thoughts above your thoughts.”

Thus, the Trinity is a mystery best appreciated with the eyes of faith. As a dogma, it is “an article of faith revealed by God, which the Magisterium of the Church presents as necessary to be believed.” Therefore, St Paul’s prayer in Ephesians 1:18 becomes essential for us today: “May the Lord enlighten the eyes of your minds so that you may know the hope to which He has called you, the riches of His glorious inheritance among His holy people.”

Today’s readings reveal beautiful truths about the nature of our Trinitarian God. The first reading presents one of Moses’ encounters with God on Mount Sinai. There, God revealed His name and His nature: “I, the Lord, am a God who is merciful and gracious, slow to anger, and abounding in steadfast love and faithfulness.” We may not fully grasp the impact of these words unless we remember the kind of gods worshipped by the nations surrounding Israel—gods who were unapproachable, terrifying, vindictive, unpredictable, and harsh. In contrast, the God of Israel revealed Himself as loving, merciful, faithful, and approachable. It filled the people with great joy knowing that their God was not like the gods of other nations. He is a God who loves His creatures, a God who can be spoken to, a God who is a Father. This is our God. We are blessed to have a God who loves us.

The Gospel deepens this revelation. It tells us that God’s love for us is so profound that He united His life with ours by sending His Beloved Son—not to condemn us, but to save us, so that we may share in His eternal life. Our God is both transcendent and immanent. He is the God who dwells in the highest heavens and yet chooses to live among us. He is Emmanuel—God with us. He is not distant from the struggles of His children; He enters into our human condition to redeem it.

To continue experiencing the presence of this loving God in our families and communities, St Paul gives us practical instructions in the second reading: “Brethren, rejoice. Mend your ways, heed my appeal, agree with one another, live in peace, and the God of love and peace will be with you.” Dear friends, the only thing that can deprive us of God’s beautiful presence is living in a way that contradicts His nature. The nature of our God is love, compassion, peace, graciousness, and faithfulness. St Paul challenges us to live according to these divine qualities so that “the grace of the Lord Jesus Christ, the love of God, and the fellowship of the Holy Spirit” may truly remain with us (2 Cor 13:13).

Happy Feast Day. Peace be with you.

Fr Isaac Chinemerem Chima