What's interesting to study is the difference between the dead sea scrolls and the "current" or canonical version of the old testament. See more on http://www.bibleandscience.com/archaeology/dss.htm and http://orion.mscc.huji.ac.il/symposiums/1st/papers/Anderson9...

Think that Judaism, Christianism and Islamism, and a big part of world culture are based or influenced on that.