Contemporary English Version
and he ordered his men to teach the song to everyone in Judah. He called it "The Song of the Bow," and it can be found in The Book of Jashar. This is the song:

Douay-Rheims Bible
(Also he commanded that they should teach the children of Juda the use of the bow, as it is written in the book of the just.) And he said: Consider, O Israel, for them that are dead, wounded on thy high places.

(Also he commanded that they should teach the children of Juda the use of the bow, as it is written in the book of the just.) And he said: Consider, O Israel, for them that are dead, wounded on thy high places.

teach

Genesis 49:8 Juda, thee shall thy brethren praise: thy hand shall be on the necks of thy enemies; the sons of thy father shall bow down to thee.

Deuteronomy 4:10 From the day in which thou didst stand before the Lord thy God in Horeb, when the Lord spoke to me, saying: Call together the people unto me, that they may hear my words, and may learn to fear me all the time that they live on the earth, and may teach their children.

bow

1 Samuel 20:36 And he said to his boy: Go, and fetch me the arrows which I shoot. And when the boy ran, he shot another arrow beyond the boy.

) is celebrated in this song.

the book

Joshua 10:13 And the sun and the moon stood still, till the people revenged themselves of their enemies. Is not this written in the book of the just? So the sun stood still in the midst of heaven, and hasted not to go down the space of one day.

Jasher.