The Book of Jasher, also known as the Book of the Upright or the Book of the Just Man, is an apocryphal book that offers a translation of a Hebrew book printed inIt is one of several works with the same title, all composed much later than the biblical times. The Hebrew title, Sepir Ha Yasher, translates to "the Book of the Upright" or "the Upright or Correct Record." Unfortunately, the title was misread as "Jasher," and it has been treated as a proper name ever since.

This text covers a significant portion of the same content found in the traditional Mosaic books of the Bible, from the creation of the world to the death of Moses. While there are minor variations, it provides an alternative perspective on these well-known biblical stories.