St. John the Apostle was one of the twelve disciples of Jesus Christ and is often referred to as the "Beloved Disciple." He is traditionally credited with writing the Gospel of John, three letters known as the Epistles of John, and the Book of Revelation. John is believed to have been the only apostle who did not die a martyr's death. John is often depicted in Christian art as a young man, sometimes with a chalice or a serpent, symbolizing his faith and protection from harm. He is also associated with the city of Ephesus, where he is said to have spent his later years. His feast day is celebrated on December 27 in the Western Christian tradition.