Jasher

upright. "The Book of Jasher," rendered in the LXX. "the Book of
the Upright One," by the Vulgate "the Book of Just Ones," was
probably a kind of national sacred song-book, a collection of
songs in praise of the heroes of Israel, a "book of golden
deeds," a national anthology. We have only two specimens from
the book, (1) the words of Joshua which he spake to the Lord at
the crisis of the battle of Beth-horon (Josh. 10:12, 13); and
(2) "the Song of the Bow," that beautiful and touching mournful
elegy which David composed on the occasion of the death of Saul
and Jonathan (2 Sam. 1:18-27).