The Columbia Encyclopedia, Sixth Edition. 2001-07.
Thomas, Saint
one of the Twelve Apostles, called Didymus. According to John, he refused to believe in the resurrection until he saw Jesus wounds; hence the expression doubting Thomas. John 11.16; 14.5; 20.2429; 21.2. By tradition he is said to have gone as missionary to Parthia or India. The Syriac-rite Christians of Malabar, India, whose church was established by the 3d cent., claim St. Thomas as their founder. Among the Pseudepigrapha are a Gospel of Thomas and Acts of Thomas. In addition, a Gospel of Thomas was among the 4th-century Coptic books found at Nag Hammadi. Feast: Dec. 21.