A New ray of light shines today in the heaven of holy Church, and its light brings warmth. The divine Master given to us by our Redeemer, that is, the Paraclete Spirit, who has come down into this world, continues his teachings to us, in the sacred Liturgy. The earliest of these his divine teachings was the mystery of the Trinity; and we have worshipped the Blessed Three: we have been taught who God is, we know him in his own nature, we have been admitted, by faith, into the sanctuary of the infinite Essence. Then, this Spirit, the mighty wind of Pentecost, (Acts 2:2) opened to our souls new aspects of the truth, which it is his mission to make the world remember; (John 14:26) and his revelation left us prostrate before the Sacred Host, the Memorial which God himself has left us of all his wonderful works. (Psalms 110:3) Today, it is the sacred Heart of the Word made flesh that this Holy Spirit puts before us, that we may know and love and adore it. There is a mysterious connection between these three Feasts, of Trinity, Corpus Christi, and the Sacred Heart. The aim of the Holy Ghost, in all three, is this,—to initiate us more and more into that knowledge of God by faith, which is to fit us for the face-to-face Vision in heaven. We have already seen how God, being made known to us, by the first, in himself, manifests himself to us, by the second, in his outward works,—for the holy Eucharist is the memorial, here below, in which he has brought together, and with all possible perfection, all those his wondrous works. But by what law can we pass, so rapidly, so almost abruptly, from one Feast, which is all directly regarding God, to another, which celebrates his works, done by him to and for us? Then again: how came the divine thought, how came, that is, eternal Wisdom, from the infinite repose of the eternally blessed Trinity, to the external activity of a love for us poor creatures, which has produced what we call the Mysteries of our Redemption? The Heart of the Man-God is the solution of these difficulties; it answers all such questions, and explains to us the whole divine plan.
Gueranger, Dom Prosper. The Liturgical Year: Volume X - Time After Pentecost - Book One (pp. 231-232). Kindle Edition.