Leviticus 23:8

But ye shall offer sacrifices unto the LORD seven days, and the seventh day also shall be a holy feast, so that ye may do no laborious work therein.'"

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 thou shalt eat sweet bread, and the seventh day shall be feastful unto the LORD.
Leviticus 23:35
The first day shall be a holy feast, so that ye shall do no laborious work therein.
Numbers 28:16
And the fourteenth day of the first month shall be Passover unto the LORD.