2 Samuel 21:15

Moreover . A new narrative begins here, and the heroic acts related in it are taken probably from some record of the martial deeds of David and his mighties. We have already seen that the Book of Jasher ( 2 Samuel 1:18 ) was a national anthology, full of ballads and songs in praise of glorious exploits of Israel's worthies. The source of the narratives recorded here apparently was a history in prose, and commenced, perhaps, with David's own achievement in slaying Goliath—a deed which celled forth the heroism of the nation, and was emulated by other brave men. These extracts were probably given for their own sake, and are repeated in 1 Chronicles 20:4-8 , where they are placed immediately after the capture of Rabbah; but they here form an appropriate introduction to the psalm of thanksgiving in 1 Chronicles 22:1-19 . It was usual in Hebrew, in making quotations, to leave them without any attempt at adapting them to their new place; and thus the "moreover" and "yet again," which referred to some previous narrative in the history, are left unchanged.