Today we contemplate and celebrate the Most Holy Trinity, the mystery of God: Father, Son and Holy Spirit.
This is a deep mystery of our faith – not a mystery to be solved, but the mystery of God who is a “communion of Love” and into whose life we are invited for all eternity.
Think of how often we recognise God the Holy Trinity in our prayer and worship.

St Matthew ends his Gospel with these words from Jesus: “Go make disciples of all the nations and baptise them in the name of the Father, and of the Son, and of the Holy Spirit ….” (Matthew 28.19)
We begin and end prayer, blessing ourselves “in the name of the Father and of the Son and of the Holy Spirit.”
Our opening greeting at Mass is a Trinitarian greeting when the priest says: “The grace (love) of the Lord Jesus Christ, and the love of God (the Father), and the communion (love) of the Holy Spirit be with you all.” (cf: St Paul, 2 Corinthians 13.14)
At the end of the Eucharistic Prayer, the priest recites this concluding doxology, praising the Trinity. “Through Him, with Him and in Him (the Lord Jesus), in the unity of the Holy Spirit, all glory and honour is yours, almighty Father, forever and ever.”
We pray in praise of God: “Glory be to the Father and to the Son and to the Holy Spirit, as it was in the beginning is now and ever shall be world without end. Amen.”