Book of Jubilees 49:22
And do thou, Moses, command the children of Israel to observe the ordinances of the passover, as it was commanded unto thee; declare thou unto them every year and the day of its days, and the festival of unleavened bread, that they should eat unleavened bread seven days, (and) that they should observe its festival, and that they bring an oblation every day during those seven days of joy before the Lord on the altar of your God.
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.