Six key doctrines constitute the worldview of Islam, which are found in sura 2:177 of the Quran:
- Angels and demons. Islam affirms the reality of finite, immaterial beings. These are angels who are under Allah's control. Two angels list all the deeds of humans, both good and bad, and these deeds are produced on the Day of Judgment (Qur'an 50:17-18; 53:5-10; 81:20). In addition to angels, there are spirits known as jinn, both good and evil. The Qur'an itself was supposedly revealed through the angel Gabriel to Muhammad. Muslims also believe in the existence of a chief evil spirit known as Satan.