Flavius Josephus ( AD 37 â `` c. 100 ) was a Jewish writer and historian who wrote about the destruction of Jerusalem in 70 . Josephus ( 37 â `` c. 100 AD ) , also Yoseph Ben Mattithyahu in Biblical Hebrew ( Joseph son of Matthias ) and Titus Flavius Josephus was a 1st-century Romano-Jewish historian and hagiographer of priestly and royal ancestry who recorded Jewish history , with special emphasis on the 1st century AD and the First Jewishâ `` Roman War which resulted in the Destruction of Jerusalem in 70 AD .