A lot of the Old Testament -in particular- can be quite violent and
often contradicts what Jesus preached in the New Testament.
If you lift parts out of context, it gets even worse.
Focus on those parts of the Bible have resulted in a lot of ugly things being done in the name of G*d in the past.
There are a lot of websites that go into details on Biblical contradictions.
They too focus on the medium rather than the message, much the way those that I see picking at Islam do.
Focusing on the medium and ignoring the message has led a lot of people from the path(s) that G*d has laid out.
A lot of evil has been done in His name as a result.
I do not believe that He would approve.
(I think that is what He was really referring to when He handed
down the commandment about not taking His name in vain).
If you want details, you can look
here and
here and
here too. If you'd rather look at contradictions in the Quran, you can look at
this site. A quick search on Bible Contradictions found 30K+ sites.
Some better, some worse.
All focus on the details rather than the message.
IMHO, a mistake.
Sorry, 1st link is to a site that is under construction.
Too bad, it was actually one of the better thought out ones.