Thomas was one of the Twelve Apostles. Through his doubt in the Resurrection of Christ the Lord, a new proof was given of that wonderful and saving event. The resurrected Lord appeared to His disciples a second time, in order to convince Thomas. The Lord said to Thomas, “Reach hither thy finger, and behold My hands; and reach hither thy hand, and thrust it into My side: and be not faithless, but believing.” And Thomas replied, “My Lord and my God!” (John 20:27-28)
After the descent of the Holy Spirit, when the apostles cast lots to see where they would each go to preach, the lot fell to Thomas to go to India. He was a little saddened that he had to go so far away, but the Lord appeared to him and encouraged him. In India, St. Thomas converted many, both aristocrats and poor, to the Christian Faith, and established the Church there, appointing priests and bishops. Among others, Thomas converted two sisters to the Faith-Tertiana and Migdonia-both wives of Indian princes. Because of their faith, both sisters were ill-treated by their husbands, with whom they no longer wanted to live after their baptism. Eventually, they were allowed to go. Being freed of marriage, they lived God-pleasing lives until their repose. Dionysius and Pelagia were betrothed, but when they heard the apostolic preaching they did not marry, but devoted themselves to the ascetic life. Pelagia ended her life as a martyr for the Faith, and Dionysius was ordained a bishop by the apostle. Prince Mazdai, Tertiana’s husband, whose son, Azan, was also baptized by Thomas, condemned the apostle to death. Mazdai sent five soldiers to kill Thomas. They ran him through with their five spears, and thus the Holy Apostle Thomas rendered his soul into the hands of Christ.
Before his death, he and the other apostles were miraculously brought to Jerusalem for the burial of the Most-holy Theotokos. Arriving too late, he wept bitterly, and the tomb of the Holy Most-pure One was opened at his request. The Theotokos’ body was not found in the tomb: the Lord had taken His Mother to His heavenly habitation. Thus, in his tardiness St. Thomas revealed to us the wondrous glorification of the Mother of God, just as he had once confirmed faith in the Resurrection of the Lord by his unbelief.
—From The Prologue from Ohrid by Saint Nikolaj Velimirović.
The Holy Apostle Thomas’ feast days are celebrated October 6 and June 30 (the Feast of the Twelve Apostles).