The Quran (Qur'an or Koran) is the holy book of Islam, the word of Allah revealed to the prophet Muhammad. The term Quran means recitation; the word refers either to a section of the revelation or to the full collection of revelations. The major theme of the Quran is God's rapport with humankind. The principal doctrine in the Quran is that only one God and one true faith exist. All people will endure a final judgment, with the just being rewarded and the sinners being punished. When humanity turned from truth, God sent prophets to show the way back. The greatest of these prophets were Abraham, Moses, Jesus and Muhammad. God sent the prophet Muhammad and the Quran to teach people how to live a moral life. The subjects of Quran contain God, creation, prophets from Adam to Jesus, Muhammad as a preacher and as a leader, Islam as a faith and as a code of life, society, law. The majority of Muslims do not speak Arabic, so the Quran in its original idiom is not accessible to them. Many Muslims have by tradition objected to the translation of the holy book, however. Islamic scholars who advocate translation argue, nevertheless, that the message of the Quran is universal and implies a duty to translate and transmit its message to non-Arabs.