The Old Testament is the Jewish bible. The New Testament is the Christian bible. I say again the Christian bible does NOT advocate the immoral and ILLEGAL things that the Koran does (and I've heard this Old Testament line a thousand times). Know why they are called by 2 different names ? Because they're different. Anyone can say anything to justify anything. Doesn't change the New Testament into being an equivalent of the Koran.
Attempting to equate Christianity with Islam is about the most ludicrous argument that could ever exist.
A good way to see the difference between Christianity and Islam is to compare the words of Jesus Christ with the words of Mo the Pedophile.
Here's a few samples of that :
1. Jesus Christ - "Blessed are you when men revile you and persecute you, and utter all kinds of evil against you falsely, on my account. Rejoice and be glad, for your reward is great in heaven."
Mohammad - "And slay them wherever you find them, and drive them out of the places whence they drove you out, for persecution is worse than slaughter".
2. Jesus Christ - "..if anyone strikes you on the right cheek, turn to him the other also..."
Mohammad - "Will ye not fight a folkwho broke their solemn pledges, and purposed to drive out the messenger and did attack you first ?"
3. Jesus Christ - "Love your enemies and pray for those who persecute you."
Mohammed - "Against them make ready your strength to the utmost of your power, including steeds of war, to strike terror into the hearts of the enemies of Allah and your enemies, and others besides whom ye may not know, but whom Allah doth know."