Like Judaism and Christianity, Islam originated in the Middle East. As F.E. Peters shows in "The Children of Abraham," the commonalities can be striking. Muslims worship the God of Abraham, as do Christians and Jews. Islam was seen as a continuation of the Abrahamic faith tradition, not a totally new religion. Muslims recognize the biblical prophets and believe in the holiness of God's revelations to Moses (in the Torah) and Jesus (in the Gospels). Indeed, Musa (Moses), Issa (Jesus) and Mariam (Mary) are common Muslim names.

Muslims believe in Islam's five pillars, which are straightforward and simple. To become a Muslim, one need only offer the faith's basic credo, "There is no god but God, and Muhammad is the prophet of God." This statement reflects the two main fundamentals of Islamic faith: belief in the one true God, which carries with it a refusal to worship anything else (not money, not career, not ego), and the crucial importance of Muhammad, God's messenger.

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The three next pillars of Islam are prayer, which is to be performed five times daily; giving alms, in the form of an annual wealth tax that helps support the poor; and fasting during daylight in the holy month of Ramadan. The fifth pillar requires that Muslims perform the pilgrimage (hajj) to Mecca at least once.

We tend to equate Islam with the Arab world, but the largest Muslim communities are found in Indonesia, Bangladesh, Pakistan, India and Nigeria. Only about one in five of the world's 1.3 billion Muslims are Arabs. Islam is the second-largest religion in Europe and the third-largest in the United States.

[ Want to Understand Islam? Start Here. - washingtonpost.com ]