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Tradition tells us that John the apostle was exiled to the Greek Island of Patmos, and lived there until a great age - possibly into his late 80s. Judas Iscariot committed suicide after betraying Christ (Matthew), or died by misadventure (Acts). Apart from well-documented martyrdoms of some of the other apostles like Peter and Andrew (Peter crucified upside down on a cross, and Andrew crucified on an X-shaped cross) many of the other disciples' deaths are not so well documented and therefore their nature is not so reliable, although it is believed that most were eventually martyred.
As far as we can tell, none of the apostles actually suffered a martyr's death. Acts of the Apostles mentions the imprisonment and miraculous release of Peter, but does not say anything about his subsequent death, even though the book was written around the end of the century, long after Peter would have died. A second-century tradition was that he was beheaded, while a later tradition was that Peter was crucified upside down. In fact, the story in Acts is dubious at best, and the later traditions have no evidence to support them.
At the time of Tertullian and Clement of Alexandria, martyrdom was confined to St. Peter, St. Paul, and St. James. The rest of the disciples were gradually discovered to have been martyred by the more recent Greeks, who prudently selected for the theatre of the disciples' preaching and sufferings some remote country beyond the Roman Empire, where proof to the contrary could never be ascertained. Burton L. Mack (Who Wrote the New Testament) says that a second-century focus on the apostles saw them imagined to have performed miracles as Jesus did, to have preached as he did and died as he did. Stories of their martyrdom were developed at this time and began to circulate.
Some believe that John was miraculously able to avoid martyrdom and was eventually exiled under guard in Patmos.
John
He was martyred while in prayer in India.
Because that is where St. Peter the Apostle was martyred.
The apostle John is believed to be the only one among the twelve apostles who was not martyred. He died of natural causes and is often referred to as the beloved disciple in the Bible.
Saint James the Greater was killed by King Herod and the first of the apostles to die. He was martyred in AD44.
Because that is where St. Peter the Apostle was martyred.
St. Philip the Apostle was martyred about the year 80 at Hierapolis, Phrygia.
We know nothing about what happened to any of the apostles, except perhaps Judas. There are various traditions from the second to the fourth century that claim that all the apostles were martyred, except the apostle John. These traditions are not to be taken as historical accounts.
Yes, Saint Thomas the Apostle is believed to have been martyred. According to tradition, he was stabbed to death with a spear in India.
Boniface, the Apostle of Germany, was martyred June 5, 754, at Dokkum, Freisland (modern Nederlands).
Simon the Apostle was martyred but we do not know how. Some say he was crucified, others say he was sawn in half.
St. Thomas did not worship any country. He worship only God. He evangelized in India and was martyred there.