"We have but twenty-two [books] containing the history of all time, books that are justly believed in; and of these, five are the books of Moses, which comprise the law and earliest traditions from the creation of mankind down to his death. From the death of Moses to the reign of Artaxerxes, King of Persia, the successor of Xerxes, the prophets who succeeded Moses wrote the history of the events that occurred in their own time, in thirteen books. The remaining four documents comprise hymns to God and practical precepts to men (William Whiston, trans., Flavius Josephus against Apion, Vol. I, in Josephus, Complete Works, Grand Rapids: Kregel, 1960, p. 8).
"And how firmly we have given credit to those books of our own nation is evident by what we do; for during so many ages as have already passed, no one has been so bold as either to add anything to them or take anything from them, or to make any change in them; but it becomes natural to all Jews, immediately and from their very birth, to esteem those books to contain divine doctrines, and to persist in them, and, if occasion be, willing to die for them. For it is no new thing for our captives, many of them in numbers, and frequently in time, to be seen to endure racks and deaths of all kinds upon the theatres, that they may not be obliged to say one word against our laws, and the records that contain them (Josephus, Ibid. p. 609).