The stichera by the Emperor Leo, Come, let us worship the Three-hypostatic Godhead, marks the beginning of the celebration of Pentecost as a feast honoring the Three-hypostatic God—the Holy Trinity.

The Feast commemorates the Baptism of Christ and the divine revelation of the Holy Trinity. At the Baptism of Christ, all three Persons of the Holy Trinity—Father, Son, and Holy Spirit—were made ...

Oral and folk tradition recounts that St. Brigid, whose feast day is celebrated in Ireland ... used a shamrock to explain the Holy Trinity. St. Brigid crosses. Credit: Joe Passmore The St ...