Leviticus 23:33-37

33The Lord spoke to Moses:

34“Tell the Israelites: The Festival of Shelters to the Lord begins on the fifteenth day of this seventh month and continues for seven days.

35There is to be a sacred assembly on the first day; you are not to do any daily work.

36You are to present a food offering to the Lord for seven days. On the eighth day you are to hold a sacred assembly and present a food offering to the Lord. It is a solemn assembly; you are not to do any daily work.

37“These are the Lord’s appointed times that you are to proclaim as sacred assemblies for presenting food offerings to the Lord, burnt offerings and grain offerings, sacrifices and drink offerings, each on its designated day.