John I (bishop of Jerusalem) John I (bishop of Jerusalem) John I of Jerusalem was the seventh Bishop of Jerusalem. He was, according to Eusebius, a Jewish Christian born to Jewish parents who kept the Law of the Torah. According to universal tradition, John I replaced the first bishop of Jerusalem Saint James the Just, the ""brother of the Lord,"" who was appointed bishop by the Apostles Peter, St. James (whom Eusebius identifies as James, son of Zebedee) and John. John was well versed in the Law of Moses and as a young man disputed with Christians until he converted with the instruction of St.
Acts of the Apostles (genre) or simply "Acts", and primarily concerns the activities of Saint Peter, John the Apostle, and Paul the Apostle, who converts to Christianity in chapter 9 and becomes the main character. It is presumably the second part of a two-part work, the Canonical Gospel of Luke being the first part, with both works being addressed to Theophilus, and sharing a similar style. Almost all scholars believe that they were written by the same person. The book narrates how the resurrected Jesus makes the apostles his witnesses, and instructs them to convert all peoples to the ends of the earth (Acts 1:8).