The Old Testament is divided into three parts:, 1. The Law (Torah), consisting of the Pentateuch, or five books of Moses. 2. The Prophets, consisting of (1) the former, namely, Joshua, Judges, the Books of Samuel, and the Books of Kings; (2) the latter, namely, the greater prophets, Isaiah, Jeremiah, and Ezekiel, and the twelve minor prophets. 3. The Hagiographa, or holy writings, including the rest of the books. These were ranked in three divisions:, (1) The Psalms, Proverbs, and Job, distinguished by the Hebrew name, a word formed of the initial letters of these books, emeth, meaning truth. (2) Canticles, Ruth, Lamentations, Ecclesiastes, and Esther, called the five rolls, as being written for the synagogue use on five separate rolls. (3) Daniel, Ezra, Nehemiah, and 1 and 2 Chronicles. Between the Old and the New Testament no addition was made to the revelation God had already given. The period of New Testament revelation, extending over a century, began with the appearance of John the Baptist.
Easton’s Bible Dictionary: Bible