The Feast of the Sacred Heart of Jesus
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.
Gueranger, Dom Prosper. The Liturgical Year: Volume X - Time After Pentecost - Book One (pp. 231-232). Kindle Edition.