This brief exposition is not intended to over-emphasize the difference between Islam and the "Judaeo-Christian" traditions. Nor does it imply that there is nothing in common between Islam and other religions, Judaism, Christianity, or other religions. Such an inference would clearly contradict the Islamic theory of the history of "religions". Such a theory can be summarized as follows: All authentic divine revelations proceeded form the same Universal God of all. As such, authentic and original teachings of all messengers of God must have been essentially the same. Slight differences might have existed but only in detailed rites and regulations. As time went on, authentic and original teachings of various prophets wee lost, changed, or intermingled with philosophical and theological interpretations to the extent that even the concept of God was given various contradictory explanations ranging from attributing divinity to trees, stars, animals, Spirits, or even human beings (e.g. Buddha and Jesus "P"). It was by God's grace that His eternal message to humanity was perfected and purified from all alien elements, presented in its pristine from to humanity at large, not any more to be subject to any loss or change. Such is the universal, eternal, divine, purified, and perfected message that Muhammad (peace and blessings of Allah be upon him) brought to humanity.
The fact that God has chosen an illiterate Arab, who was neither a Jew nor a Christian, to carry this noble message does, by no means, justify the tremendous energies spent by Jewish or Christian orientalists or missionaries to belittle his mission by all means. Nor does it justify the distortions, unfairness, and lack of objectivity in what amounts to be an attempt to impute dishonesty on the noble characters of Muhammad (peace and blessings of Allah be upon him) directly, or indirectly, openly or "diplomatically".
Any fair and logical study of Muhammad's history and characters would leave no room to doubt of any ulterior motive to fabricate his claim of prophethood and divine revelation. It does not stand to reason to say that the book (the Qur'an), that caused a far-reaching spiritual, moral, social, economical, and political revolution that changed the course of history, was a product of convulsive epileptic seizures! Nor does it stand reason to say that this book was a product of a simple and illiterate desert dweller! The brief discussion of the so-called "Judaeo Origins", "Christian Origins" or "Judaeo-Christian Origins" of Islam, even in one single topic is only self-explanatory.
What then holds an honest and open-minded seeker for truth from admitting the Divine source of Islam?
Does it seem too much for the "rational" and "scientific" mind to accept the concept of divine revelation?
It would perhaps be plausible if those who denied Muhammad's truthfulness were all atheists, since divine revelation in their view is all superstition. It is hardly plausible to see devout Jewish or Christian orientalists and missionaries, whose own faith is based on divine revelation, trying by all means to dismiss the desert dweller's claim of prophethood, although his life and character leave no reason to doubt his sincerity and truthfulness.
Might it not be better for humanity to turn to its loving Creator, receive his universal message to humanity, with no prejudice or cynicism, to reflect on it, and implement it in man's life. Could that bring about unity, happiness, and peace to our conflict-torn world?