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Although not mentioned directly in the Bible, there is recorded in the Bible an outline of the Arabic people as the Children of Abraham who inhabited the “eastern country”. The history of the Muslim peoples, therefore, begins with the prophet Abraham and his descendants through Ishmael, his firstborn son.

Abraham's first born son by Hagar the Egyptian was Ishmael. It's in the Bible, the Torah, Genesis 16:15, RSV. “And Hagar bore Abram a son; and Abram called the name of his son, whom Hagar bore, Ishmael. Abram was eighty-six years old when Hagar bore Ishmael to Abram.”