Written by the Good Doctor, Isaac Asimov, this secular companion to the Bible is a must for anyone who wants to read the Bible and understand what it says.
Asimov gives you the behind the scenes action, explains the people and places and generally gives you the advantage of his huge intellect as you read. He injects none of his own religious message at all. The religion part is up to you.
http://www.amazon.com/exec/obidos/search-handle-form/104-2267577-3796767