Trinity Sunday
The collect for today, the Octave Day of Pentecost, commonly called Trinity Sunday, from The Book of Common Prayer (Canadian, 1962):
Almighty and everlasting God, who hast given unto us thy servants grace, by the confession of a true faith, to acknowledge the glory of the eternal Trinity, and in the power of the Divine Majesty to worship the Unity: We beseech thee, that this holy faith may evermore be our defence against all adversities; who livest and reignest, one God, world without end. Amen.
For the Epistle: Revelation 4:1-11
The Gospel: St John 3:1-15
Artwork: Masaccio, The Holy Trinity with the Virgin, St. John and Two Donors, c. 1427. Fresco, Santa Maria Novella, Florence.