Leviticus 23:8

But for seven days you shall present an offering by fire to the Lord. On the seventh day is a holy convocation; you shall not do any laborious work.’”

Treasury of Scripture Knowledge

Summary

But ye shall offer an offering made by fire unto the LORD seven days: in the seventh day is an holy convocation: ye shall do no servile work therein.

Bible References

General references

Exodus 13:6
For seven days you shall eat unleavened bread, and on the seventh day there shall be a feast to the Lord.
Leviticus 23:35
On the first day is a holy convocation; you shall do no laborious work of any kind.
Numbers 28:16
Then on the fourteenth day of the first month shall be the Lord’s Passover.