Belief in the message of Muhammad comes second only to belief in the one God. Muhammad was born around the year 570 and was orphaned at an early age. He was eventually raised by his uncle, who had religious prominence within the main Quraysh tribe of Mecca but was of modest financial means. At age 25, Muhammad married Khadija, a well-to-do, 40-year-old woman.
At age 40, during a retreat in the hills outside Mecca, Muhammad had his first experience of Islam. The angel Gabriel appeared to a fearful Muhammad and informed him that he was God’s chosen messenger. Gabriel also communicated to Muhammad the first revelation from God.
Terrified and shaken, Muhammad went to his home. His wife became the first person to accept his message and convert to Islam. After receiving a series of additional revelations, Muhammad started preaching the new religion, initially to a small circle of relatives and friends, and then to the general public.
The Meccans first ignored Muhammad, then ridiculed him. As more people accepted Muhammad’s call, the Meccans became more aggressive. After failing to sway Muhammad away from the new religion they started to persecute his less prominent followers.
When this approach did not work, the opposing Meccans decided to persecute Muhammad himself. By this time, two main tribes from the city of Yathrib, about 300 km (200 mi) north of Mecca, had invited Muhammad to live there.
The clan leaders invited Muhammad to Yathrib as an impartial religious authority to arbitrate disputes. In return, the leaders pledged to accept Muhammad as a prophet and thus support the new religion of Islam.