The letters that appear after the Paul's letters in the New Testament
were written by different people. Hebrews is an early Christian sermon
whose author is unknown. The books of James,
1 Peter, 2 Peter, 1 John,
2
John,
3 John, and
Jude all bear the name of their respective authors.
They are commonly called the “General Epistles”.
The book of Revelation stands alone as apocalyptic literature
in the New Testament. It is addressed to seven congregations in Asia
Minor and was written by the Apostle John while he was in exile on the
island of Patmos..