Leviticus 23:33-37

33The Lord said to Moses,

34“Say to the Israelites: ‘On the fifteenth day of the seventh month the Lord’s Festival of Tabernacles begins, and it lasts for seven days.

35The first day is a sacred assembly; do no regular work.

36For seven days present food offerings to the Lord, and on the eighth day hold a sacred assembly and present a food offering to the Lord. It is the closing special assembly; do no regular work.

37(“ ‘These are the Lord’s appointed festivals, which you are to proclaim as sacred assemblies for bringing food offerings to the Lord—the burnt offerings and grain offerings, sacrifices and drink offerings required for each day.