This week, our journey through ancient Hebrew and Greek
literature produces what looks like a first among our candidates for Old
Testament canonicity: a letter.
The New Testament is full of letters. Acts and Luke are
early candidates, and once we hit Romans, almost everything else is too. The Old Testament preserves a few missives to or from various
dignitaries in its books of history, but to the best of my knowledge the
book-length letter is a New Testament phenomenon.