Liber AL vel Legis is the central sacred text of
Thelema, written down from dictation mostly by
Aleister Crowley, although Rose Edith Crowley is also known to have written two phrases into the manuscript of the Book after its dictation. Crowley claimed it was dictated to him by a discarnate entity named
Aiwass or
Aiwaz. However, the three chapters are largely written in the
first person by the Thelemic deities
Nuit,
Hadit, and
Ra-Hoor-Khuit respectively, rather than by Aiwass/Aiwaz.