My sisters and brothers in Christ,
The Solemnity of the Most Holy Trinity identifies us as Christians. We believe in One God and Three Persons. This is doctrine, for sure, but it is also clear in the teachings of Jesus handed to us in the Church.
The first reading today is from the Book of Exodus. God is speaking to Moses. Later we come to understand this God as our Father. He is also Creator of us all and the God who sends us His Son, Jesus Christ, and the God who sends us the Holy Spirit. Perhaps even in our own hearts
today we tend to think of God using these images from the Jewish Scripture.
There are indications in the Jewish Scripture of the complexity of God, but it is only in the Christian Scriptures and particularly in the words of Jesus that we begin to see a clearer understanding of God as Three Persons in One God. This is such a profound mystery that none of us can ever grasp it completely. Rather, we trust in the words of Jesus, who tells us:
The Father and I are One. I will send you the Holy Spirit. God, baptize in the name of the Father, the Son and the Holy Spirit.

The second reading today comes from the Second Letter to the Corinthians and has this blessing in it: The grace of the Lord Jesus Christ and the love of God and the fellowship of the Holy Spirit be with all of you. Already we touch upon the understanding of the early Church, which had also to grow into this mystery. From this type of blessing in the New Testament, it was not long before the early Christians were proclaiming Three Persons in God and struggling to understand that mystery.

For us today, the heart of our Christianity is acknowledging that Jesus is fully human and yet fully God, the Second Person of the Trinity. That is a big step of faith but absolutely vital to being Christians.
John’s Gospel today explains clearly that Jesus comes to redeem the world, not to condemn it. So we are at the heart of our faith: God loves us and asks us to love one another. God loves us and sends His Son to redeem us and His Spirit to sanctify us. God loves us and invites us to live in this divine mystery in the same way: loving one another and working for one another’s redemption in Christ Jesus.

Let us give thanks to God the Father, His only-begotten Son the Lord Jesus Christ and to the Holy Spirit! Amen.

Father Jesus