Thomas, called “the twin,” is chiefly remembered for doubting the reality of the resurrection until he saw the Lord for himself. Once he was satisfied, he made a heartfelt profession of faith: “My Lord and my God” (cf Jn 20:24-29). Nothing certain is known of his life except for this evidence in the gospel of John. He is said to have subsequently preached the Gospel to the people of India. Since the fourth century the celebration of the transference of his body to Edessa has been commemorated on July 3. He comforts us when our faith is weak, encourages us to persevere and demonstrates that “every doubt can lead to an outcome brighter than any uncertainty” (Benedict XVI). – CTS New Daily Roman Missal 2012, p 2807; Christian Prayer 1990, p 1166