THE BOOK OF, that is, the book of the upright, or of the excellent, noble-minded. This work is mentioned in Joshua 10:13 , and 2 Samuel 1:18 , and would seem to have been a collection of national, historical, triumphal, and elegiac songs, which was still extant in the time of David. Josephus speaks of a book of Jasher as then existing in the temple, but nothing is known respecting it. The books now published under this name are gross forgeries.