The founder of Islam, Mohammed, was born in Mecca, Arabia (570 AD). He received his first revelation by the angel Gabriel at the age of 40. Though he could not read or write, his revelations were apparently written down by his secretaries for about 22 years until he died in 632 AD. He denied Polytheism and only worshipped Allah, the only God who sent his last and greatest prophet, Mohammed, to give the word of God, the Koran, to mankind.