"Again Yahweh spoke to Moses, saying, 34 “Speak to the sons of Israel, saying, ‘On the fifteenth of this seventh month is the Feast of Booths for seven days to Yahweh. 35 On the first day is a holy convocation; you shall do no laborious work of any kind. 36 For seven days you shall bring an offering by fire near to Yahweh. On  the eighth day you shall have a holy convocation and bring an offering  by fire near to Yahweh; it is a solemn assembly. You shall do no  laborious work." Leviticus 23:33-36