The Apostle Thomas, called the Twin, came from Galilee. After receiving the Holy Spirit, he traveled far and wide, preaching the Gospel of Christ. He brought the precepts of Christian faith and life to the Parthians, the Medes, the Persians, the Hyrcanians and the Bactrians.
At length he went to India and instructed the people in the Christian religion. Here the holiness of his life and teaching and the greatness of his miracles had a twofold effect. In the Indian people they excited admiration of Thomas himself and love of Jesus Christ; but in the idolatrous king these same qualities aroused only anger, which was intensified by the Apostles success with the people.
The king condemned Thomas to death and had him pierced with lances. And so, at Calamina, Thomas added the crown of martyrdom to the glory of his apostleship.A sermon of Pope St. Gregory
In Scripture we read, The Spirit of the Lord has adorned the Heavens. Now by Heavens ornaments we mean the preachers virtues. St. Paul enumerates these ornaments when he says, To one through the Spirit is given the utterance of wisdom; and to another the utterance of knowledge, according to the same Spirit; to another faith, in the same Spirit; to another the gift of healing, in the one Spirit; to another the working of miracles; to another prophecy; to another the distinguishing of spirits; to another various kinds of tongues; to another interpretation of tongues. But all these things are the work of one and the same Spirit, who divides to everyone according as He will.
Taken from The Hours of the Divine Office in English and Latin, Vol. I: Advent to Passion Sunday (Collegeville, Minnesota: The Liturgical Press, 1963), pp. 1684-1685.
Epistle and Gospel for December 21