"In the name of the Father, and of the Son, and of the holy Spirit." (Matthew 28: 19).
The Church celebrates today the Solemnity of the Most Holy Trinity. This is a great mystery, a great revelation and at the same time a great obstacle to faith to many people like Jews and Muslims.
But the mystery of the Blessed Trinity, One God in three Persons and Undivided Unity is not an object of idle speculation or a subject for futile doctoral thesis. The Trinity is a mystery for Credo and Adoration.
"We believe in one God,
the Father, the Almighty,
Maker of all that is, seen and unseen.
"We believe in one Lord, Jesus Christ,
the only Son of God,
eternally begotten of the Father.
"We believe in the Holy Spirit, the Lord, the giver of life,
who proceeds from the Father and the Son.
With the Father and the Son he is worshipped and glorified."
This is the Faith of our Fathers. The Faith revealed by Jesus Christ.
We believe!
I do not understand the mystery of the Trinity. I pray to Abba Father using the Lord's Prayer, prayer taught us by Christ our Teacher. I pray to our Lord Jesus Christ, Son of God and Son of Mary. I experience Jesus Christ in the Sacraments of Reconciliation and the Eucharist. I experience the Holy Spirit in prayer, in His inspirations and power. This is how I know that the Trinity is real.