2 Samuel 1:18

18and he ordered that the sons of Judah be taught the Song of the Bow.1:18 Or be taught the use of the bow; literally be taught the bow It is written in the Book of Jashar:1:18 Or the Book of the Upright One, commonly cited as Jasher; note that the Song of the Bow that follows is not found in known manuscripts attributed to Jasher.