Nehemiah 8:18
Also day by day, from the first day to the last day, he read in the book of the law of God. They kept the feast seven days; and on the eighth day was a solemn assembly, according to the ordinance.
Leviticus 23:36
Seven days you shall offer an offering made by fire to the LORD. On the eighth day shall be a holy convocation to you; and you shall offer an offering made by fire to the LORD. It is a solemn assembly; you shall do no regular work.
Numbers 29:35
"'On the eighth day you shall have a solemn assembly: you shall do no servile work;
Deuteronomy 31:10-13
Moses commanded them, saying, "At the end of every seven years, in the set time of the year of release, in the feast of tents,
John 7:37
Now on the last and greatest day of the feast, Jesus stood and said in a loud voice, "If anyone is thirsty, let him come to me and drink.