Saint John, the son of Zebedee and brother of James, wrote the Fourth Gospel, three Epistles, and the Book of Revelation.  He spent his later life in Ephesus and founded many churches in Asia Minor.  He cared for the Blessed Mother from the time of the crucifixion until her death and Assumption into Heaven.  Saint John wrote extensively about God's love for his people, and became known as the "beloved disciple."  He was the only one of the twelve Apostles who died a natural death.  His feast day is celebrated on the 27th of December.