and he said it should be taught to the people of Judah; behold, it is written in the Book of Jashar. He said:
When David had rent his clothes, mourned, and wept, and fasted, for the death of Saul, and done justice upon him who made himself guilty of it, one would think he had made full payment of the debt of honour he owed to his memory; yet this is not all: we have here a poem he wrote on that occasion; for he was a great...
Commenting on 2 Samuel 1:17-27
(Also he bade them teach the children of Judah [the use of] the bow: behold, [it is] written in the book of Jasher.) (g) That they might be able to match their enemies the Philistines in that art.
The use of the bow - The use of is not in the Hebrew; it is simply the bow, that is, a song thus entitled. See the observations at the end, Sa2 1:21 (note).