Book of Jasher

The Book of Jasher or the Book of the Upright or the Book of the Just Man

This is one of the apochrypal Books of Jasher. There are several (as many as five) separate works by this title, all composed much later than Biblical times. 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.