The New Testament includes writings such as the four Gospels (Matthew, Mark, Luke, John), Acts of the Apostles, various letters (epistles) written by apostles like Paul, Peter, and John, and the Book of Revelation.
john received a little book and he ate it while it was sweet as honey.
Peter, James, and his brother John.
The apostle John was the youngest of the twelve apostles.
The New Testament includes 27 books, such as the Gospels of Matthew, Mark, Luke, and John, the Acts of the Apostles, the Epistles of Paul, and the Book of Revelation.
Many prophets have seen the end of time, but the most notable example is recorded in the Revelation of St. John, revealed to John the Beloved, one of Christ's apostles, on the isle of Patmos.
These were two different Johns, attributed to two different books.
St Paul for sure did not write the books of Matthew, Mark, Luke, John, Acts of the Apostles, James, Peter 1, Peter 2, Revelation, and others.
John was one of the Apostles of Jesus and leaders in the early Church. He was bishop of Ephesus and was later exiled to the island of Patmos, where he had and wrote down his Revelation. For more detailed information, see the link below
If you are referring to the Apostles, James and John, and not two of the hundreds of other saints by those names, then Saint James was older. John was the youngest of the Apostles and was probably in his late teens or early 20s at the time.
Many, if not all, of the apostles wrote letters. Some are recorded in the Bible, while others are not. Matthew, Mark, John, I, II, & III John, I & II Peter and Revelation were all written by some of the original apostles, Matthew, Mark and John probably do not qualify as letters, but the others definitely are. Paul wrote many letters some of which were put in the Bible, and we know some were not. Luke and Acts were written as a form of a letter by Luke, who was not an original apostle.
The names of the apostles inscribed on the 12 gates of the New Jerusalem, as described in the Book of Revelation (Revelation 21:12-14), are the names of the twelve tribes of Israel. However, the specific names of the apostles associated with the gates are typically understood to represent the twelve apostles of Jesus, traditionally including Peter, James, John, Andrew, Bartholomew, Matthew, Thomas, James the Less, Thaddeus, Simon the Zealot, Philip, and Judas Iscariot (though the latter is sometimes replaced by Matthias, who was chosen to replace him).