Book of Jubilees 4:28
And in the fifteenth jubilee in the third week Lamech took to himself a wife, and her name was Betenos the daughter of Baraki'il, the daughter of his father's brother, and in this week she bare him a son and he called his name Noah, saying, 'This one will comfort me for my trouble and all my work, and for the ground which the Lord hath cursed.'
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.