Planten, you have to quit contradicting yourself.
In one post you say: “Bible is an open book and available. Every one can read it and understand”.
And in another post you said: “Not like Bible, where everything is unnatural and a mystery”.
Have you ever read the Bible from cover to cover, to make claims like that? So can everybody understand it or is everything in it a mystery?

Make up your mind please.
The Bible was written in the course of about 1300 years and is a work of many men who were inspired by God. Many of them were prophets that did miracles (the gift of miracles was the sign that the prophet was genuine). It is an account of history of the chosen nation, the promises made to them, and the prophecies of the Messiah to come. What is unnatural about that?
Jesus fulfilled those prophecies (over 100 of them).
Koran is a word of only one illiterate man, who claimed to be receiving revelation from an angel. He did no miracles and when his followers asked him for miracles, he told them that he would not tempt God. However, the OT prophets did not have to ask for miracles, God would do a miracle through them as needed without them asking.
It was also true of Jesus’ disciples, since they had gift of miracles as well.
The absence of miracles from Muhammd proves that he was not a prophet.
And if God wanted to have a Son, He does not have to have anybody’s permission. Muslims say: “God could not have any companions”. God can do anything He wants, since he is God. It does not have to make sense to you, or be easy to understand. You are only a creation. Even if you think about it for the whole eternity, you would not even come close to understanding who God is.
