Son, I'm far more educated on these issues than you are, so I will try and educate you, if you will listen.
Of course the Koran has some characters and passages similar to the Bible. Why? The Bible was written 600 years (and in some cases a lot more) before the Koran, and MohScumMhad was a thief, a pedophile, a terrorist, and a liar. He stole large portions of the Koran from other existing works, and modified them according to his own twisted philosophies.
MohScumhad stole from the Old Testament, he stole from the New Testament, he stole from the Jewish Mishnah (commentary on the Torah), he stole from Arab Pagan writings, he stole from
the Apocrypha.
MohScumHad was accused of stealing writings in his own day: Quran 25:5
And they say: "Tales of the ancients, which he has caused to be written: and they are dictated before him morning and evening."
Thank me for educating you son.