Jude, the Brother of the Lord, was one of the Twelve Apostles, commemorated by the Orthodox Church on June 19. The synaxarion accounts him a kinsman of Christ as a son of Joseph the Betrothed by an earlier marriage, and thus a brother of the Apostle James the Brother of the Lord, the first bishop of Jerusalem. He is to be carefully distinguished from Judas Iscariot the betrayer; the Gospels themselves take care to mark him out, and by tradition he came to be called Jude or Thaddaeus rather than Judas to avoid confusion with the traitor.
He is known under several names. In the apostolic lists he appears as 'Judas of James' (Luke 6:16; Acts 1:13), and he is also called Thaddaeus and Lebbaeus; the Orthodox tradition further records the name Levi for him. The Orthodox synaxarion identifies this apostle with the Thaddaeus named among the Twelve, presenting Jude, Thaddaeus, and Lebbaeus as one and the same person. Modern scholarship is divided over whether these names denote a single apostle, and the Eastern tradition itself distinguishes him from Thaddaeus (Addai) of the Seventy, a separate disciple associated with the mission to Edessa.
To Jude is traditionally attributed the catholic Epistle of Jude, a single chapter that stands among the general epistles of the New Testament. In its opening the author names himself 'a servant of Jesus Christ and brother of James,' identifying himself by his kinship rather than by apostolic office. The Orthodox tradition relates that Jude did not at first believe in Christ, coming to faith and to his apostolic labors after the Lord's Resurrection and Ascension.
After Pentecost the apostle preached the Gospel widely. The synaxarion relates that he proclaimed Christ through Judea, Samaria, Galilee, Idumea, Syria, Arabia, Mesopotamia, and Armenia, and tradition associates him also with Edessa and the region of Beirut. While preaching in the country around Mount Ararat he was seized by pagans and put to death, by tradition crucified and shot through with arrows. He is reckoned among the company of the Twelve commemorated together in the Synaxis of the Holy Apostles.