(Also he bade them teach the children of Judah the use of the bow: behold, it is written in the book of Jasher.) 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, 2 Samuel 1:21 (note).
Related Commentaries of 2 Samuel 1:18
2 Samuel 1:18
18 (Also he bade them teach the children of Judah the use of the bow: behold, it is written in the book of Jasher.)