
Alaa Safi as Simon Z.: a former Zealot, the brother of Jesse who was the paralytic at Bethesda, and one of the twelve disciples of Jesus. Austin Reed Alleman as Nathanael: a former architect in Caesarea Philippi, an old friend of Philip, and one of the twelve disciples of Jesus. Yoshi Barrigas as Philip: a friend of Andrew in his hometown Bethsaida, a former disciple of John the Baptizer, an old friend of Nathanael, and one of the twelve disciples of Jesus. Joey Vahedi as Thomas: a former caterer, the business partner of Ramah, and one of the twelve disciples of Jesus. Jordan Walker Ross as Little James: a singer who was supposed to be a member of the 288 Jerusalem Temple Choir, the son of another Alphaeus and one of the twelve disciples of Jesus. Giavani Cairo as Thaddeus: a former stonemason in Bethsaida, the son of James, and one of the twelve disciples of Jesus. Shayan Sobhian as Big James (season 1, episodes 1-4): Sobhian is the first actor to play Big James. Kian Kavousi as Big James (season 1, episodes 5-8): Kavousi is the second actor to play Big James.
Martell is the third actor to play Big James.
Abe Martell as Big James (season 2): a former fisherman in Capernaum, one of the sons of Zebedee and Salome, the older brother of John, a former fishing partner of Simon and Andrew, and one of the twelve disciples of Jesus. George Xanthis as John: a former fisherman in Capernaum, one of the sons of Zebedee and Salome, the younger brother of Big James, a former fishing partner of Simon and Andrew, and one of the twelve disciples of Jesus. Noah James as Andrew: a former fisherman in Capernaum, one of the sons of Jonah, the brother of Simon Peter, a former disciple of John the Baptizer, a friend of Philip in his hometown Bethsaida, a former fishing partner of Zebedee and his sons, and one of the twelve disciples of Jesus. Paras Patel as Matthew: a former publican or tax collector in Capernaum, the son of Alphaeus, and one of the twelve disciples of Jesus. Camila Carreon as child Mary Magdalene (season 1, episode 1). Elizabeth Tabish as Mary Magdalene: a redeemed woman from Magdala and one of the women helping Jesus' ministry. Shahar Isaac as Simon Peter: a former fisherman in Capernaum, one of the sons of Jonah, the brother of Andrew, the husband of Eden, the son-in-law of Dasha, a former fishing partner of Zebedee and his sons, and one of the twelve disciples of Jesus.
Shayan Fazli as child Jesus (season 1, episode 5).Jonathan Roumie as Jesus: a craftsman from Nazareth and the son of Mary and Joseph, who is the awaited Messiah and the Son of God.3.4 Introduced in Christmas Special 2021.