Book of Jubilees 31:1
And on the new moon of the month Jacob spake to all the people of his house. saying: 'Purify yourselves and change your garments, and let us arise and go up to Bethel, where I vowed a vow to Him on the day when I fled from the face of Esau my brother, because he has been with me and brought me into this land in peace, and put ye away the strange gods that arc among you.'
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.