the Apostle, otherwise called Didymus, which in Greek signifies a twin, Matthew 10:3; Luke 6:15 . We know no particulars of his life till A.D. 33, John 11:16; John 14:5-6; John 20:24-29; John 21:1-13 . Ancient tradition says, that in the distribution which the Apostles made of the several parts of the world, wherein they were to preach the Gospel, the country of the Parthians fell to the share of St. Thomas. It is added, that he preached to the Medes, Persians, Carmanians, Hircanians, Bactrians, &c. Several of the fathers inform us that he also preached in the East Indies, &c.