The Book of Mysteries, also known as The Book of Secrets (Greek Transliteration: Ta tōn mustērion; Coptic transliteration: Pjōme nmmusterion; Arabic transliteration: Sifr al-asrar), is one of the Seven Scriptures of Manichaeism. This scripture is transliterated in Chinese as "阿罗瓒部" (Āluózànbù) in Yilue, transliterated from the Middle Persian "rãzãn", meaning "Secret" (Secrets).It may take the form of a "treatise de anima" based around the nature of the soul, or otherwise as an exegetical workIn the Manichaean canon, the Pragmateia, the Book of Mysteries, and the Book of Giants are grouped together. It makes extensive use of Christian apocryphal traditions and was written in opposition to a similar book written by Bardaisan, as a rebuttal to his take on the mysteries. Source: Wikipedia (en)