John 7:37-39

On the last day, which is the great day, of the feast, Jesus stood and cried aloud, saying, If any one thirst, let him come to me, and drink.

Revelation 7:9-17

After these things I saw, and lo! a great multitude, which no one could number, out of every nation and all tribes and peoples and tongues, standing before the throne and before the Lamb, clothed in white robes, and palms 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
On the last day, which is the great day, of the feast, Jesus stood and cried aloud, saying, If any one thirst, let him come to me, and drink.
Revelation 7:9
After these things I saw, and lo! a great multitude, which no one could number, out of every nation and all tribes and peoples and tongues, standing before the throne and before the Lamb, clothed in white robes, and palms in their hands.