Jubilees Chapter 50
9 You shall do no work whatever on the Shabbat day save what you have prepared for yourselves on the sixth day, so as to eat, and drink, and rest, and keep Shabbat from all work on that day, and to bless YAHWEH your Sovereign Ruler, who has given you a day of festival and a kodesh day: and a day of the kodesh kingdom for all Yisrael is this day among their days forever.