Manuscript
AKA The War of the Children of Darkness
Found in the Dead Sea Scrolls, it describes a war, actual or spiritual, of the tribes of Levi, Judah, and Benjamin against the Moabites and Edomites. It was bought by E. L. Sukenik in 1947 from a Bethlehem antiquities dealer.
(The Origin of the Bible: Newly Updated by F. F. Bruce, J. I. Packer, Philip W. Comfort, and Carl F. H. Henry, 2020. Texts and Manuscripts of the Old Testament by Mark R. Norton, Page 162)