The Sitrei Torah is a compilation of writings which concern the mysteries of the Hebrew Torah. The book contains a selection of ancient writings, including the Apocalypse of Moses and Avraham, the Cefer Yetzira and the Cefer HaBahir. It also includes the Testimony of the Twelve Patriarchs and two new writings by the author, including the Cefer Mispariym (the book of numbers) and the Cefer Zamar (the book of music).