Numbers 29:35

On the eighth day you shall have a solemn assembly; you shall do no laborious work.

Leviticus 23:36

For seven days you shall present an offering by fire to the Lord. On the eighth day you shall have a holy convocation and present an offering by fire to the Lord; it is an assembly. You shall do no laborious work.

John 7:37-39

Now on the last day, the great day of the feast, Jesus stood and cried out, saying, If anyone is thirsty, let him come to Me and drink.

Revelation 7:9-17

After these things I looked, and behold, a great multitude which no one could count, from every nation and all tribes and peoples and tongues, standing before the throne and before the Lamb, clothed in white robes, and palm branches were in their hands;

Treasury of Scripture Knowledge

Summary

On the eighth day ye shall have a solemn assembly: ye shall do no servile work therein:

Bible References

Eighth day

John 7:37
Now on the last day, the great day of the feast, Jesus stood and cried out, saying, If anyone is thirsty, let him come to Me and drink.
Revelation 7:9
After these things I looked, and behold, a great multitude which no one could count, from every nation and all tribes and peoples and tongues, standing before the throne and before the Lamb, clothed in white robes, and palm branches were in their hands;