The Bible does a pretty good job of portraying what is in the Bible but it does leave a lot of important parts. Reading the actual Bible will fill in all the important parts that didn't make it in to the series. And it's understandable that it leaves out a lot since they are trying to condense thousands of years of events into a 10 hour series. Still good though.
I DVR'd and watched them both last night! Both awesome shows! The Bible is a little refresher for me, because I get confused between biblical characters. Reminds me of when I was a child, watching the cartoon series, "The Flying House". The Vikings is a little appetizer for the series premier of Game of Thrones! I know it's not related, but same genre. :)