the Father is charity, the Son is grace and the Holy Spirit is communication
From Advent until today, the Church has had us consider the magnificent manifestations of God’s mercy toward men: the Incarnation, the Redemption, Pentecost. Now she directs our attention to the source of these gifts, the most Holy Trinity, from whom everything proceeds. Spontaneously, there rises to our lips the hymn of gratitude expressed in the Introit of the Mass: “Blessed be the Holy Trinity and undivided Unity; we will give glory to Him, because He has shown His mercy to us”: the mercy of God the Father, “who so loved the world that He gave it His only-begotten Son” (cf. Jn 3:16); the mercy of God the Son, who to redeem us became incarnate and died on the Cross; the mercy of the Holy Spirit, who deigned to come down into our hearts to communicate to us the charity of God and to make us participate in the divine life. The Church has very fittingly included in the Office for today the beautiful antiphon inspired by St. Paul: “Caritas Pater est, gratia Filius, communicatio Spiritus Sanctus, O beata Trinitas!”; the Father is charity, the Son is grace and the Holy Spirit is communication: applying this, the charity of the Father and the grace of the Son are communicated to us by the Holy Spirit, who diffuses them in our heart. The marvelous work of the Trinity in our souls could not be better synthesized. Today’s Office and Mass form a veritable paean of praise and gratitude to the Blessed Trinity; they are a prolonged Gloria Patri and Te Deum. These two hymns—one a succinct epitome, and the other a majestic alternation of praises—are truly the hymns for today, intended to awaken in our hearts a deep echo of praise, thanksgiving, and adoration.