There are twenty-one epistles or letters in the New Testament, including Hebrews. Of these, the only epistles for which the author is really known are the epistles of Paul.
Paul wrote Romans, 1 Corinthians, 2 Corinthians, Galatians and Philemon. Many scholars believe he also wrote 1 Thessalonians and Philippians.
2 Thessalonians, Ephesians, Colossians, 1 Timothy, 2 Timothy and Titus are sometimes referred to as pseudo-Pauline epistles, as the majority of critical scholars believe that they were written by anonymous authors long after the time of Paul. In fact, 2 Thessalonians 2:2 implicitly tells the reader that forged Pauline letters had been circulating. Whether or not this was a genuine Pauline epistle, this statement certainly warns us that not all Paul's epistles were authentic.
The Epistles of James, Peter, John and Jude were all written pseudonomously. 2 Peter actually includes the text of the Epistle of Jude! Jude, in turn, while intended to be read as if written by Jude in the first century, stands with its readers and refers to the apostles in the distant past.
The Epistles
The Old Testament authors were Jewish and the New Testament authors Christian, although some of the New Testament authors (Paul, for example) came from a Jewis background.
The New Testament epistles are important to scholars because they help demonstrate how first-century Christianity evolved and some differences in belief that existed in various Christian communities.
There are no books called "letters" (or epistles) in the Hebrew Old Testament. All books that are designated as "letters" are Greek, and found in the New Testament.
the first four books (gospels), acts, epistles and revelation.
Paul wrote 13 epistles and not 21 epistles in the new testament.
The authors of the New Testament vary, as it is a collection of writings by different individuals. Some of the key authors include Paul (Epistles), Matthew (Gospel of Matthew), Mark (Gospel of Mark), Luke (Gospel of Luke and Acts), John (Gospel of John, Revelation), and Peter (Epistles).
Epistles. The majority of New Testament writings are epistles of Paul, James, Peter, John, and Jude with the anonymous Hebrews.
The whole new testament was written in Greek and pauline's epistles as well.
There are three types of books in the New Testament. They are the Historical Books, Pauline Epistles, and General Epistles
The known authors of the general epistles in the New Testament are James, Peter, John, and Jude. James is believed to have been written by James the brother of Jesus, Peter by the apostle Peter, John by the apostle John, and Jude by Jude, a brother of James.
Paul.
Paul was the main writer of letters (epistles) in the New Testament.
Paul, Peter, John, James, and Jude all wrote epistles that formed part of the New Testament.
The Epistles
If you're referring to St. Paul's letters in the New Testament, they are called epistles.
Paul's two Epistles to the Thessalonians (1 and 2) are in the New Testament.