(upright),Book of ("the book of the upright"), alluded to in two passages only of the Old Testament. (Joshua 10:13) and 2Sam 1:18 It was probably written in verse; and it has been conjectured that it was a collection of ancient records of honored men or noble deeds. It is wholly lost.
Smith’s Bible Dictionary
Jasher
Smith’s Bible Dictionary, William Smith (1863). Public domain, from the CrossWire SWORD module.