Today is a day the Church has set aside to contemplate the mystery of the Holy Trinity, which is “the central mystery of Christian faith and life. It is the mystery of God himself. It is, therefore, the source of all the other mysteries of faith, the light that enlightens them” (CCC #234). Since “God put us in the world to know, to love, and to serve him, and so to come to paradise,” we necessarily must be in relationship with the Triune God if we hope to enter the eternal beatific vision in heaven at the end of our earthly life, where we will know him to our fullest potential (CCC #1721). With the Holy Trinity as the central mystery of our faith, anything we believe or celebrate as Catholics finds its origin of truth there and thus helps to facilitate our relationship with all three Persons of the Triune God. With that in mind, let’s look more specifically at how the sacrament of the Eucharist leads us more deeply into relationship with the Blessed Trinity.