During his earthly ministry, Jesus, after whom the Christian religion is named, gathered many followers. These people were called disciples, or learners. Of the many disciples that Jesus had, there were 12 who formed an inner circle. After his death and resurrection, there were 11 disciples left, because Judas–who had betrayed Jesus–killed himself
To replace Judas, the other disciples chose a man named Matthias. He and the other 11 were sent out by Jesus as “apostles.” The word is derived from a Greek term meaning “one sent forth.” The other apostles were Simon (called Peter); Andrew, Simon’s brother; James the Elder (son of Zebedee); John, James the Elder’s brother; Philip; Bartholomew; Matthew (or Levi); Thomas; James the Younger; Judas (or Thaddeus, brother of James the Younger); and Simon Zelotes.
Except for meager accounts in the New Testament, the literature of the early Christian church is so fragmentary that there is no full or certain knowledge of the lives of the apostles. A mass of tradition has thus grown up around these men who by their teaching and martyrdom established Christianity. Typical of this tradition is the Apostles’ Creed, a short three-part profession of faith ascribed to them, which began to be used in the Roman church in the 3rd century.
Peter, the fisherman whom Jesus had called to be “a fisher of men,” was apparently the leader of the apostles. He witnessed most of the incidents in the life of Jesus recorded in the New Testament. With James the Elder and John, Peter formed an inner circle within the Twelve.
This favored group was present at such miracles as the raising of the daughter of Jairus and the Transfiguration. A widespread tradition holds that Peter went to Rome, where he was crucified in AD 64. Andrew, it is said, was crucified at Patras, Greece, on an X-shaped cross (hence the term “St. Andrew’s cross”). What is believed to be part of his cross is today enclosed in one of the four great piers supporting the dome of St. Peter’s in Rome. John, “the beloved disciple,” is represented throughout the Gospels as fiery but charming. After the Crucifixion he was associated with the other apostles in making converts in Jerusalem. After Peter, he was the most prominent of those who bore witness to the Resurrection. James the Elder was a steadfast worker in the early church and is said to have carried the Gospel as far west as Spain. The first martyr among the apostles, he was slain by order of Herod Agrippa I, king of Judea, in about AD 44 (Acts xii, 1-2).
Thomas was the original “doubting Thomas,” so called because he would not believe in the Resurrection until he could see and touch the Master (John xx, 24-29). Tradition says that he went to India. Members of the ancient churches of southern India still call themselves “Christians of St. Thomas.”
The New Testament tells little about the other seven apostles. According to one legend, however, Bartholomew was flayed and crucified while on a missionary trip to India. James the Younger is said to have been stoned to death when he persisted in his evangelistic work among the Jews.
The term apostle was later applied also to Paul because he was the equal of the Twelve in importance of office and in missionary zeal. It was also bestowed on such apostolic assistants as Barnabas, Paul’s traveling companion, and Luke, “the beloved physician,” who is the traditional author of the Third Gospel and the Acts of the Apostles. Only two of the four Gospels bear the names of real apostles. The First Gospel is believed to have been written by Matthew, and the Fourth by John. Mark, who wrote the Second Gospel, assisted Paul and Barnabas in establishing the early churches in Asia Minor.