14 Therefore it is said in the book of the Wars of Jehovah, Waheb in Suphah and the valleys of the Arnon,
Numbers 21:14 Cross References - MLV
Joshua 10:13
13 And the sun stood still and the moon stayed, until the nation had avenged themselves of their enemies. Is this not written in the book of Jashar? And the sun stayed in the midst of heaven and hastened not to go down about a whole day.
2 Samuel 1:18
18 (and he commanded them teach the sons of Judah the song of the bow; behold, it is written in the book of Jashar):