Leviticus 23:36-42

For seven days you must present a gift to the LORD. On the eighth day there is to be a holy assembly for you, and you must present a gift to the LORD. It is a solemn assembly day; you must not do any regular work. “‘These are the appointed times of the LORD that you must proclaim as holy assemblies to present a gift to the LORD – burnt offering, grain offering, sacrifice, and drink offerings, each day according to its regulation, besides the Sabbaths of the LORD and all your gifts, votive offerings, and freewill offerings which you must give to the LORD. “‘On the fifteenth day of the seventh month, when you gather in the produce of the land, you must celebrate a pilgrim festival of the LORD for seven days. On the first day is a complete rest and on the eighth day is complete rest. On the first day you must take for yourselves branches from majestic trees – palm branches, branches of leafy trees, and willows of the brook – and you must rejoice before the LORD your God for seven days. You must celebrate it as a pilgrim festival to the LORD for seven days in the year. This is a perpetual statute throughout your generations; you must celebrate it in the seventh month. You must live in temporary shelters for seven days; every native citizen in Israel must live in temporary shelters