Leviticus 23:36

Seven days shall ye bring a sacrifice to Jehovah; in the eighth day a holy calling shall be to you, and bring ye a sacrifice to Jehovah: it is a restraining: any work of labor ye shall not do.

Nehemiah 8:18

And he will read in the book of the law of God day by day, from the first day even to the last day. And they will do a festival seven days; and in the eighth day a restraint according to judgment

John 7:37

In the last day, the great one of the festival, Jesus stood and cried, saying, If any thirst, let him come to me, and drink.

Numbers 29:12-38

And in the fifteenth day to the seventh month, a holy calling shall be to you: all work of service ye shall not do, and keep ye a festival to Jehovah seven days.

Deuteronomy 16:8

Six days shalt thou eat unleavened, and in the seventh day an enclosing to Jehovah thy God: thou shalt not do work.

Joel 1:14

Consecrate a fast., call an assembly, gather together the old men, all the inhabitants of the land to the house of Jehovah your God, and cry to Jehovah.

Joel 2:15

Clang ye the trumpet in Zion; consecrate a fast, call a restraining.

2 Chronicles 7:8-11

And Solomon will do the festival in this time seven days, and all Israel with him, a great convocation, from the going in of Hamath even to the torrent of Egypt

Treasury of Scripture Knowledge

Summary

Seven days ye shall offer an offering made by fire unto the LORD: on the eighth day shall be an holy convocation unto you; and ye shall offer an offering made by fire unto the LORD: it is a solemn assembly; and ye shall do no servile work therein.

Bible References

Seven

Numbers 29:12
And in the fifteenth day to the seventh month, a holy calling shall be to you: all work of service ye shall not do, and keep ye a festival to Jehovah seven days.

The eighth

2 Chronicles 7:8
And Solomon will do the festival in this time seven days, and all Israel with him, a great convocation, from the going in of Hamath even to the torrent of Egypt
Nehemiah 8:18
And he will read in the book of the law of God day by day, from the first day even to the last day. And they will do a festival seven days; and in the eighth day a restraint according to judgment
John 7:37
In the last day, the great one of the festival, Jesus stood and cried, saying, If any thirst, let him come to me, and drink.