Trinity Sunday

Sunday (15/6) is Trinity Sunday. Trinity Sunday is the first

Sunday after Pentecost in the Western Christian liturgical calendar, and the Sunday of Pentecost in Eastern Christianity. Trinity Sunday celebrates the Christian doctrine of the Trinity, the three Persons of God: the Father, the Son, and the Holy Spirit. 

The idea of the Trinity can be a difficult to visualise. I've always enjoyed C.S. Lewis' ability to illustrate abstract ideas in a concrete way. Here's a snippet from Mere Christianity about picturing the Trinity:

The Circle Dance

This Sunday (26.05) is Trinity Sunday. It's the day Churches all round the world pause and reflect on the God who is three-in-one!

The fourth-century Cappadocian Fathers tried to communicate the notion of life as mutual participation by calling the Trinitarian flow a "circular rotation" (peri-choresis) between the three. They were saying that whatever is going on in God is a flow that’s like a dance; and God is not just the dancer, God is the dance itself! 

The Incarnation is a movement—Jesus comes forth from the Father and the Holy Spirit to take us back with him into this eternal embrace, from which we first came (John 14:3). We are invited to join in the dance and have participatory knowledge of God through the Trinity.

Trinity is the very nature of God, and this God is a circle dance, a centrifugal force flowing outward, and then drawing all things into the dance centripetally. If this God names himself/herself in creation and in reality then there must be a “family resemblance” between everything else and the nature of the heart of God.

Scientists are discovering this reality as they look through microscopes and telescopes. They are finding that the energy is in the space between the particles of the atom and between the planets and the stars. They are discovering that reality is absolutely relational at all levels. When you really understand Trinity, however slightly, it’s like you live in a different universe. And a very good and inviting one!

Adapted from: The Divine Dance: Exploring the Mystery of Trinity. Richard Rohr. Source

Trinity Sunday | Athanasian Creed

Trinity Sunday is the first 

Sunday after Pentecost in the Western Christian liturgical calendar, and the Sunday of Pentecost in Eastern Christianity. Trinity Sunday celebrates the Christian doctrine of the Trinity, the three Persons of God: the Father, the Son, and the Holy Spirit. 

The Athanasian Creed is attributed to Athanasius, the fourth century bishop of Alexandria who was the strongest defender of the doctrines of the Trinity and the divinity of Christ.  It defines the doctrines of the Trinity and the nature of Christ in very concise language.

Note that the term "catholic" with the lower case 'c' is not a reference to the Roman Catholic Church, but is a reference to the universal Christian faith, since that is how the term was originally used.

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Athanasian Creed

Whoever desires to be saved should above all hold to the catholic faith.

Anyone who does not keep it whole and unbroken will doubtless perish eternally.

Now this is the catholic faith:

That we worship one God in trinity and the trinity in unity,
neither blending their persons
nor dividing their essence.
For the person of the Father is a distinct person,
the person of the Son is another,
and that of the Holy Spirit still another.
But the divinity of the Father, Son, and Holy Spirit is one,
their glory equal, their majesty coeternal.