Islam is an Abrahamic religion that believes in the Judeo-Christian God called Allah. It originated in the 7th century CE with the revelations received by the prophet Muhammad. The five pillars of Islam are the profession of faith, daily prayers, almsgiving, fasting during Ramadan, and pilgrimage to Mecca. Islam spread rapidly through trade routes and military conquests, and it is now one of the largest religions in the world.