The religion of Islam was begun early in the 7th century A.D. by a man named Muhammad. He claimed to have been visited by the angel Gabriel. During these angelic visitations, which continued for about 23 years until Muhammad's death, the angel purportedly revealed to Muhammad the words of God (called “Allah” in Arabic and by Muslims). These dictated revelations comprise the Qur'an, Islam's holy book. Islam teaches that the Qur'an is the final authority and the last revelation of Allah.
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