How Does 'Exodus' Compare With The Bible's?

Ridley Scott's 3-D version of the Biblical story of Exodus earned the top spot its debut weekend, pulling in more than $24 million--not as good as Noah did on its first weekend. NPR asked professor of Hebrew and comparative literature at the University of California, Berkeley Robert Alter to weigh on on the film. Where did it differ from the Biblical record? You can hear or read the story here.