Leviticus 23:8

But you shall offer an offering made by fire unto the LORD seven days: in the seventh day is a holy convocation: you shall do no regular work on it.

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
Seven days you shall eat unleavened bread, and on the seventh day shall be a feast to the LORD.
Leviticus 23:35
On the first day shall be a holy convocation: you shall do no regular work on it.
Numbers 28:16
And on the fourteenth day of the first month is the passover of the LORD.