The exact books included in the [[Old Testament]] vary from Christian tradition to Christian tradition. While all major Christian traditions recognize the books of the Hebrew [[Tanakh]], some also recognize certain other books. For instance, the Ethiopian Orthodox Church recognizes 1 [[Enoch]] as a canonical book, whereas other Christian denominations do not. See [[Biblical Canon]].
The Protestant Old Testament takes a very conservative approach; in most respects, it is identical to the Tanakh, recognizing no Deuterocanonical works. Thus, there are 39 books in the Protestant Old Testament. These are, in order: