The Quran, also spelled as Qur’an, is the holy book of Islam, believed to be the word of God as revealed to the Prophet Muhammad by the archangel Gabriel over a period of approximately 23 years, beginning in 610 CE. It is written in classical Arabic and is divided into 114 chapters known as surahs, which vary in length. The Quran addresses all aspects of human existence, including law, morality, and guidance for personal conduct.

Key themes of the Quran include:

1. Monotheism: The oneness of God (Allah) and the importance of worshipping Him alone. 2. Prophethood: The belief in prophets who convey God’s message to humanity, with Muhammad being the final prophet. 3. Revelation: The importance of the Quran as a divine revelation. 4. Afterlife: Beliefs regarding life after death, including heaven and hell. 5. Ethical Guidelines: Instructions on how to live a righteous life and treat others.

The Quran is recited and memorized by Muslims around the world and is considered the ultimate source of authority in Islam. It is often accompanied by tafsir which provides interpretations and explanations of the text.