This documentary is based on the works of archeologist Israel Finkelstein and historian Neil Silberman (that had previously published a book): they confront biblical events of the Old Testament with what history and archeology tell us. The documentary is divided into 4 parts: the Patriarchs (about Abraham), the Exodus (about Moses), the Kings (about David and Solomon), the Book (about the first Israelites, the part I actually prefered). Finkelstein and Silberman comment on their discoveries throughout the documentary, along with other interventions like the very useful one of Thomas Romer, eminent theologian. In the US, many people believe that all of the Bible is historically true, but it's impossible, just like 1+1 will never be equal to 3. Here I'm talking about facts, not interpretations. It's a fact, for instance, that some elements mentioned as happening at the time of Abraham (around -1800 if you follow the Bible) can't have happened before -700. This shows the text was written around that time. It's fact. It doesn't mean Abraham didn't exist, but it means the text we have is not a trustworthy representation of the period it refers to (-1800) but on the contrary is full of elements refering to the period and context in which it was written (or edited if we suppose there were texts mentioning Abraham earlier but they were lost). So, you have various interpretations and hypotheses of those facts, and the documentary presents those of Finkelstein and Silberman, which are quite logical and not eccentric at all. However, they do not talk much about the oral tradition, and if you're interested on that point you should see Nova's documentary The Bible's Buried Secrets. I wish everyone thinking the Bible historically true could see this documentary and... well, let's say could broaden their minds! The purpose of this doc isn't to attack faith (it even brings proof of the existence of David), but to study the Bible for what it is: an ancient text.