Leviticus 23:3-8

3You may work for six days. But the seventh day is a day of rest, a day when you don’t work, a holy assembly. Don’t do any work. It is the Lord’s day of rest—a holy day wherever you live.

4“The following are the Lord’s appointed festivals with holy assemblies, which you must announce at their appointed times.

5“The fourteenth day of the first month, in the evening, is the Lord’s Passover.

6The fifteenth day of this same month is the Lord’s Festival of Unleavened Bread. For seven days you must eat unleavened bread.

7On the first day there will be a holy assembly. Don’t do any regular work.

8Bring the Lord a sacrifice by fire for seven days. On the seventh day there will be a holy assembly. Don’t do any regular work.”