Christopher Glyn

The Old Testament is a collection of thirty-nine books about the history and religion of the people of Israel. The authors of these books are unknown, and each book possesses a unique tone, style, and message. Individually, they include stories, laws, and sayings that are intended to function as models of religious and ethical conduct. Together - through hundreds of characters and detailed events - they represent a unified narrative about God and his attempt to relate to humankind by relating to a specific group of people.
The Old Testament contains four main sections: the Pentateuch, the Former Prophets (or Historical Books), the Writings, and the Latter Prophets.