Jubilees 50:9

Ye shall do no work whatever on the Sabbath day save what ye have prepared for yourselves on the sixth day, so as to eat, and drink, and rest, and keep Sabbath from all work on that day, and to bless the Lord your God, who has given you a day of festival and a holy day: and a day of the holy kingdom for all Israel is this day among their days for ever.