Book of Jubilees 38:1
And after that Judah spake to Jacob, his father, and said unto him: 'Bend thy bow, father, and send forth thy arrows and cast down the adversary and slay the enemy; and mayst thou have the power, for we shall not slay thy brother, for he is such as thou, and he is like thee let us give him (this) honour.'
Background and history of Book of Jubilees, and issues with this book.
R. H. Charles, The Book of Jubilees, in The Apocrypha and Pseudepigrapha of the Old Testament, vol. 2 (Oxford: Clarendon Press, 1913). Public domain in the United States (published 1913). Charles died in 1931, so the book is in the public domain in the United Kingdom. The verse text is the Joshua Williams transcription at pseudepigrapha.com. Jubilees 1:8 and 1:9 are divided at the break in the 1902 Clarendon scan (archive.org bookofjubileesor00char), where verse 9 begins “For they will forget.” That scan also numbers the angel-of-the-presence sentence as 1:29. Editorial brackets in the translation are Charles’s.