John, the son of Zebedee, was called along with this brother James ("the Great") to be one of Jesus' twelve apostles who would accompany him on his ministry. John appears in the lists of apostles in the synoptic gospels as well as Acts. John and his brother James were given the nickname "Boanerges" (sons of thunder) by Jesus; some believe this was a reference to their tempers. Although younger than James, he appears to have first been a disciple of John the Baptist before following Jesus.
Read Article: Saint John the Apostle: Did St. John Write Revelations, the Gospel of John, and Three Epistles? Did John Really Die?


Below is a link to a “Truth Seekers” article containing some interesting, albeit lesser known, tidbits RE the socalled “Book of Revelation”.
Being that it’s an American election year, I particularly like the one attributed to Thomas Jefferson:
“The Book of Revelation is merely the ravings of a maniac, no more worthy nor capable of explanation than the
incoherences of our own nightly dreams.”
http://www.truthseekers.co.za/index2.php?option=com_content&do_pdf=1&id=287