Leviticus 23:36

36For seven days you shall present food offerings to the Lord. aOn the eighth day you shall hold a holy convocation and present a food offering to the Lord. It is a bsolemn assembly; you shall not do any ordinary work.

Leviticus 23:39

39“On the fifteenth day of the seventh month, when you have cgathered in the produce of the land, you shall celebrate the feast of the Lord seven days. On the first day shall be a solemn rest, and on the eighth day shall be a solemn rest.

Numbers 29:35

35 d“On the eighth day you shall have a esolemn assembly. You shall not do any ordinary work,

1 Kings 8:65-66

65So Solomon held fthe feast at that time, and all Israel with him, a great assembly, from gLebo-hamath to hthe Brook of Egypt, before the Lord our God, seven days.
Septuagint; Hebrew  seven days and seven days, fourteen days
66On the eighth day he sent the people away, and they blessed the king and went to their homes joyful and glad of heart for all the goodness that the Lord had shown to David his servant and to Israel his people.

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