Holy Trinity Sunday is celebrated a week after Pentecost Sunday in honor of the most fundamental of Christian beliefs—belief in the Holy Trinity. We can never fully understand the mystery of the Trinity, but we can know that God is three Persons in one Nature. The three Persons of God—Father, Son, and Holy Spirit—are all equally God, and They cannot be divided.

The music for Sunday 26 May (Trinity Sunday) includes the Missa Brevis (Andrea Gabrieli), The Cherubic Hymn from Liturgy of St John Chrysostom op. 31 (Sergey Rakhmaninov,) Laus Trinitati (Hildegard of Bingen) and Oculi Omnium (Charles Wood)