Guest Post by: David Tonaszuck
The Trinity: Living in the Heart of God’s Love
My son, my daughter, I love you so very much and am always with you. Come and be by my side and together our hearts will be one; one with our Father in Heaven and the Holy Spirit. “Glory to the Father, the Son, and the Holy Spirit; to God who is, who was, and who is to come.”
Today, as we gather to reflect on the mystery and beauty of the Trinity, we hear the gentle, insistent call of God’s love. It is a love that does not waver, a love that does not leave us orphaned or alone. “Eye has not seen, ear has not heard, nor has it so much as dawned on man what God has prepared for those who love him.” Paul’s words to the Corinthians remind us of something we so often forget: that the wisdom and plans of God are far beyond anything we can imagine, and yet, through the Holy Spirit, He reveals Himself to us in ways both simple and profound.
Our Father in Heaven loves us immeasurably, not because of what we have done, but because we are His children. Today, we stand before the mystery of the Trinity: Father, Son, and Holy Spirit. It’s tempting to treat this as just a theological idea, something abstract, something reserved for scholars and catechisms. But the Trinity is not a puzzle to be solved; it is a relationship to be entered into. The grace of the Trinity is given by the Father, through the Son, in the Holy Spirit. “The Father is Love, the Son is Grace, the Holy Spirit is their bond of fellowship, O Blessed Trinity.”
We say in our Creed: “We believe in one God.” Not three gods, but one God; above all things as Father, through all things as the Word, and in all things as the Spirit. This unity is not cold or distant. It is a unity that welcomes us in, that makes space for us, that draws us into the dance of divine love and communion.
In the Gospel, we hear Jesus preparing his friends for what’s to come: the sending of the Holy Spirit at Pentecost. The disciples didn’t understand, not yet. They couldn’t imagine how the story would unfold; how suffering, death, and resurrection would become the path to new life for all creation. But Jesus promises: “When he comes, the Spirit of truth, he will guide you to all truth.” The Spirit will not speak on His own, but He will speak what He hears from the Father and the Son. He will declare to us the things that are coming.
And so, just as the disciples were sent out to build up the Body of Christ, we are sent too. How do we do this? Not by our own power, but by the grace of the Holy Spirit. God’s love enters our hearts and radiates outward; a quiet, steady light that touches others through our words and actions. Heart to heart. The Spirit transmits the Father’s love, through the Word of Jesus, into our own lives, so that we can share it with those around us.
The Holy Spirit nudges us; gently, persistently, toward a life that reflects the Gospel: loving God with all our heart, body, mind, and soul, and loving our neighbor as ourselves. When we allow the Spirit to move in us, we build up the Body of Christ, here and now, in our families, in our communities, in every ordinary moment. By saying yes to God’s will, we help create the kingdom of heaven wherever we go.
Living a Trinitarian life is not just about prayer or coming to Mass; though these are essential. It’s about letting that love spill over into every part of our lives: in acts of kindness, in forgiveness, in charity, in the way we greet a stranger or comfort a friend. Through the sacraments, especially the Eucharist, we are strengthened to be Christ’s presence in the world. Our words and actions become echoes of the love of the Trinity. And in return, we receive the gifts of the Spirit: joy, peace, love, happiness, reverence.
We become true children of God when we trust Him, obey Him, and let Him shape us into people of the New Covenant: people of love, people of relationship, people who walk the path toward a righteous life by building the Body of Christ around us.
My son, my daughter, I love you, and am always with you. Go out with love. Give praise, thanksgiving, and glory to our Father in heaven always. And remember: love and serve those around you, as I love you.
Amen.
Learn More about the Holy Trinity
About Our Guest Blogger
Blessed Carlo Acutis once said, “Not me, but God.” His words echo deeply in my own spiritual life. This blog is not about me, but about the work of the Holy Spirit. I choose to remain anonymous because the voice behind these reflections isn’t what matters — the One speaking through them is.
I am a lifelong Catholic with a deep love for Scripture, the sacraments, and the quiet ways God speaks through everyday life. Live the Eucharist was born from my desire to share how the Gospel and the Eucharist shape not just my Sundays, but every step of the journey.
My hope is that these reflections bless you, challenge you, and draw you closer to Jesus — truly present in the Eucharist and profoundly present in your daily life.
