Was revealed to the Prophet Muhammad by God in Arabic. This revelations are regarded by Muslims as the sacred word of God, intended to correct any errors in previous holy books such as the Old and New Testaments. Its name is often spelled "Koran" in English. Some Muslims find it offensive.
There are 114 chapters in the book written in the old Arabic dialect.
The "five pillars" of Islam: In Islam, a verbal declaration of faith is not enough, for belief in Allah makes obedience to Him a duty. Muslims consider everything they do in life to be an act of worship, if it is done according to Allah's guidance. There are also five formal acts of worship which help strengthen a Muslim's faith and obedience. They are often called the "Five Pillars of Islam."