Howdy Adlan, here is an excerpt from an article which you can read at the following link. It answers the question on the reliability of the Bible.
http://crosswalk.com/faith/ministry_...s/1149441.html

M = Manuscripts. Since we don't have the original biblical manuscripts, the question is, "How good are the copies?" The answer is that the Bible has stronger manuscript support than any other work of classical literature-including Homer, Plato, Aristotle, Caesar, and Tacitus. The reliability of Scripture is also confirmed through the eye witness credentials of the authors. Moses, for example, participated in and was an eyewitness to the remarkable events of the Egyptian captivity, the Exodus, the 40 years in the desert, and Israel's final encampment before entering the Promised Land, all of which are accurately chronicled in the Old Testament.