Flavius Josephus 
The History of the Destruction of Jerusalem 

Whereas the war which the Jews made with the Romans hath been the greatest of all those, not only that have been in our times, but, in a manner, of those that ever were heard of; both of those wherein cities have fought against cities, or nations against nations; while some men who were not concerned in the affairs themselves have gotten together vain and contradictory stories by hearsay, and have written them down after a sophistical manner; and while those that were there present have given false accounts of things, and this either out of a humor of flattery to the Romans, or of hatred towards the Jews; and while their writings contain sometimes accusations, and sometimes encomiums, but no where the accurate truth of the facts; I have proposed to myself, for the sake of such as live under the government of the Romans, to translate those books into the Greek tongue, which I formerly composed in the language of our country, and sent to the Upper Barbarians; Joseph, the son of Matthias, by birth a Hebrew, a priest also, and one who at first fought against the Romans myself, and was forced to be present at what was done afterwards.