Around the longest?
Compared to what religious text? Don't the Vedas predate the Bible? Or are you talking about the oral traditions? What exactly do you mean by accurate as well?
Genesis 1-11 are up to 2000 years older than any writing from the Indus Valley.
This is why I reject historians as sources of information and go straight to the original sources. That's how I found the following among Sumerian clay tablets:
--the flood
--excerpts of the creation story
--the Sumerian version of Adam and Eve
--a legend of men migrating into Shinar
--the Sumerian version of Cain and Abel
--a reference to all the world coming to Shinar to speak a single language
--people with life spans beyond 200 years
--legal documents written in the same style as Genesis 5
How many do we have to find before we admit that almost the entire 11 chapters is represented somewhere in Sumerian literature?
If you still disagree, Genesis 1-11 state clearly that the stories took place in Iraq, not Canaan. (Why would they do that?)
--Garden of Eden was located where the Tigris and Ephrates met
--Cain went into exile in Nod (the Zagros Mountains)
--Babel was located in central Iraq
--Akkad was located in central Iraq
--Nineveh: northern Iraq
--Caleh: northern Iraq
In fact, not a single Canaanite location is found anywhere in these chapters. If you want to know the point of view of the original writers, shouldn't you start with the places they were familiar with?