The 6 books of the New Testament that are not letters include: Matthew, Mark, Luke, John, Acts, and Revelation.
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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.
There are books in the Old Testament, letters are in the New Testament.
If by 'works' you mean writings such as books or letters, then there are 27 in all.
There are a total of 27 books in the New Testament
There are 39 books in the Old Testament
There are 27 books in the New Testament.
There are 39 books in the Old Testament and 27 in the New Testament.
There are 14 letters or books written by Paul. 13 of the letters mention he is the writer and the other letter or book of Hebrews is widely accepted that he wrote that also.
There are 27 books in the new testament/christian testament
There are a two books of Chronicals in the old testament.
There are 39 books in the Old Testament.