Saint John the Evangelist was one of the Twelve Apostles of Jesus and the author of the Gospel of John and was one of the "pillars" of the Jerusalem church after Jesus' death. He was one of the original twelve apostles and is thought to be the only one to have lived into old age and not be killed for his faith. John is associated with the city of Ephesus, where he is said to have lived and been buried. Some believe that he was exiled to the Aegean island of Patmos, where he wrote the Book of Revelation.