Book of Jubilees 15:34
And there will be great wrath from the Lord against the children of Israel. because they have forsaken His covenant and turned aside from His word, and provoked and blasphemed, inasmuch as they do not observe the ordinance of this law; for they have treated their members like the Gentiles, so that they may be removed and rooted out of the land. And there will no more be pardon or forgiveness unto them [so that there should be forgiveness and pardon] for all the sin of this eternal error.
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.