The Orthodox Tewahedo biblical canon is a version of the Christian Bible used in the two Oriental Orthodox churches of the Ethiopian and Eritrean traditions: the Ethiopian Orthodox Tewahedo Church and the Eritrean Orthodox Tewahedo Church. At 81 books, it is the largest and most diverse biblical canon in traditional Christendom. Western scholars have classified the books of the canon into two categories — the narrower canon, which consists mostly of books familiar to the West, and the broader canon, which includes nine additional books.