05/28/2026
Before Sunday Ep. 3: Trinity Sunday Is Not a Math Problem
Join St. John’s Cathedral’s Seminarian-in-Residence, Ed Daniels, Jr., with Dean Kate Moorehead Carroll for Before Sunday, a weekly conversation that looks ahead to the readings, the liturgy, and the questions shaping Sunday worship.
This week, we look ahead to Trinity Sunday — a day that can sound like we are supposed to explain something nobody fully understands. But Trinity Sunday is not a math problem. It is an invitation into mystery, worship, relationship, and love.
Dean Kate reflects on why the Trinity cannot be fully solved by the rational mind, why worship may be the most honest response to mystery, and how the life of God is revealed not as isolation, but as communion. We also talk about Paul’s blessing in 2 Corinthians — “the grace of the Lord Jesus Christ, the love of God, and the communion of the Holy Spirit” — and why one of the clearest Trinitarian lines in Scripture comes to us as a blessing, not an explanation.
In the Gospel from Matthew, Jesus sends the disciples to make disciples of all nations, baptizing in the name of the Father, Son, and Holy Spirit. We reflect on the connection between Trinity and mission, the beauty of being invited into the “dance” of God, and the honest line that the disciples worshiped Jesus, but some doubted.
Readings:
Lesson: 2 Corinthians 13:11–13
Psalm: Psalm 8
Gospel: Matthew 28:16–20
In this episode:
• Trinity Sunday: mystery, worship, and the limits of explanation
• Why the Trinity is not a math problem
• Worship as an honest response to awe and mystery
• 2 Corinthians: grace, love, and communion as blessing
• The Trinity as relationship, mutuality, and love
• Why Christianity cannot really be lived alone
• Matthew 28: the Great Commission and being sent in the name of the Trinity
• “They worshiped him, but some doubted”: doubt as part of a robust faith
• Jesus’ promise: “I am with you always”
• A Sunday takeaway: how the Trinity can teach us to love God, our neighbors, and ourselves more deeply
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St. John’s Cathedral, Jacksonville, Florida