"Behold it is written in the Book of Jasher." (II Samuel 1:18)
"Is not this written in the Book of Jasher?" (Joshua 10:13)
History has given us two separate and very different books by the same title. One of these may be the book mentioned in the Holy Bible. If so, it would reveal history and information which would augment and supplement our knowledge of the events from creation to the conquering of the Promised Land.
The value of The Book of Jasher is seen in the large quantity of additional detail revealed in the period between divine creation and the time of Joshua’s leadership over Israel when the Israelites enter into the land of Canaan.
The Books of Jasher includes details about the antediluvian patriarchs, the institution of the 10 Commandments, the establishment of the priesthood, angels, watchers, the flood, the tower of Babel, and many other events mentioned in the Bible. The tales are expanded and infused with detail not previously available.