OK, I will take it from other side, God revealed a holy book to Jesus called the Injeel, some parts of which may be still available in the teachings of God to Jesus in the New Testament. But this does not mean that the Bible we have today because it is not the original scriptures that were revealed by God. They underwent alterations, additions, and omissions. This was also said by the Committee charged with revising The Holy Bible (Revised Standard Version). This Committee consisted of thirty-two scholars who served as members of the Committee. They secured the review and counsel of an Advisory Board of fifty representatives of the co-operating denominations.
The Committee said in the Preface to The Holy Bible (Revised Standard Version), p. iv, “Sometimes it is evident that the text has suffered in transmission, but none of the versions provides a satisfactory restoration. Here we can only follow the best judgment of competent scholars as to the most probable reconstruction of the original text.
The Committee also said in the Preface, p. vii, Notes are added which indicate significant variations, additions, or omissions in the ancient authorities (Mt 9.34; Mk 3.16; 7.4; Lk 24.32, 51, etc.).
The exact revelation to Moses and Jesus has been lost. What we have today, in the form of the Old Testament and the New Testament was created by men and has gone through significant alteration and translation over the centuries.
Let us take the Christian Gospels, for example, and in doing this we intend no slight on what Christians believe. There were many written versions of the Gospel. “Gospel” means “Good News”. A Gospel is not meant to be a biography of Jesus. If it was supposed to be biography, we would see that different Gospels say different things which often contradict each other. No, the Gospels say things about Jesus and who he was.
Of the many Gospels written, the Christian Church has chosen four for its scriptures. Even Biblical scholars would not suggest that the words attributed to Jesus in these Gospels are necessarily the words that Jesus spoke. In a sense, the Gospel writers put these words into Jesus’ mouth to highlight different parts of his teaching, for example about love or about peace.
I must repeat, no criticism is implied of Christianity. No one is suggesting that the Gospel writers maliciously altered the words revealed to Jesus. On the contrary, out of an exaggerated love for him they attributed things to him which they believed to be true. In doing so, though, the original words of Jesus and the original message revealed to him, were lost.
They no longer exist today. We can no longer say with certainty that Jesus said this or that or that he did this or that.
The result of these changes, then is that the basis of what the Jews and the Christians believe has become distorted over time and is the creation of men, rather than the revelation of Almighty Allah. Adam, Abraham, Moses, David, Solomon and Jesus were all prophets of Allah.
The message that was revealed to the Jews, though, has been altered through translation and re-printing and re-telling. The Jews came to believe that a Messiah would restore their Kingdom and that they, alone, are the Chosen People of God.
“Yahweh,” by the way, is simply the Hebrew word for God. “Allah” is the Arabic word, used by all Arabs, whether they are Christian or Muslim. Christians, out of an exaggerated love for Jesus, began to see him as more than human, God’s Son, who came to redeem the world from the effects of Adam’s sin.
It would take many pages to explain this properly, but this summary tries to explain why Christians, Muslims and Jews differ to this day, even though they were all a part of the original revelation. The Jews believe that God’s revelation ended with the Old Testament and they now await the coming of a Messiah. Christians believe God’s revelation to have ended in the person of Jesus, who was that Messiah. Neither of these religions, then, accept that Islam adds anything to what God had wanted to say.