The Dead Sea Scrolls are a full 1000 years older than that - they catapulted the manuscript timetable back one thousand years to between 150 B.C.E. to 70 C.E. As the Romans swept through the land of Israel in their crushing fury, destroying the Second Temple in Jerusalem (which had been there since 516 B.C.E.), the small really strange sect of Essenes Jews who lived at Qumran hid their texts in ja