Today the Church celebrates the Feast of the Most Holy Trinity. In the 14th century, Pope John XXII instituted the celebration as a feast for the entire Church. After the liturgical reforms of Vatican II, the celebration became a solemnity.
The Most Holy Trinity is an eternal exchange of life-giving love. Throughout history, God has shown humanity His selfless love. Christ has revealed the Father’s love in the power of the Holy Spirit. He has shown us the inner life of the Holy Trinity: a communion of persons, Father, Son and Holy Spirit. The Church is also a community of persons that shares in God’s Trinitarian life and love.
Marriage is a metaphor for God’s self-giving love. It is also a participation in it. Like all sacraments, Matrimony draws husbands and wives more deeply into the Trinitarian life of God. The Catechism of the Catholic Church teaches that “the Christian family is a communion of persons, a sign and image of the communion of the Father and the Son in the Holy Spirit” (CCC, 2205).