Book of Jubilees 10:22
And the Lord our God said unto us: Behold, they are one people, and (this) they begin to do, and now nothing will be withholden from them. Go to, let us go down and confound their language, that they may not understand one another's speech, and they may be dispersed into cities and nations, and one purpose will no longer abide with them till the day of judgment.'
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.