Parallel
2 Samuel 1:18
Swete's Septuagint · Berean Standard Bible
καὶ εἶπεν τοῦ διδάξαι τοὺς υἱοὺς Ἰούδα· ἰδοὺ γέγραπται ἐπὶ βιβλίου τοῦ εὐθοῦς.
and he ordered that the sons of Judah be taught the Song of the Bow. It is written in the Book of Jashar (note: 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.):