Sepir Ha Yasher, the Hebrew title of this book, means the 'Book of the Upright', or 'the Upright or Correct Record'. This title was misread as 'Jasher', and at some point Jasher was treated as a proper name; however the pronoun 'the' (hebrew 'ha') never preceeds proper names. This text covers much of the same ground as the traditional Mosaic books of the Bible, from the creation of the world to the death of Moses, albeit with several minor variations.