Leviticus 23:6-8

The Passover

⁶ And on the fifteenth day of the same month is the Feast of Unleavened Bread to the Lord; for seven days you shall eat unleavened bread. ⁷ _v On the first day you shall have a holy convocation; you shall not do any ordinary work. ⁸ But you shall present a food offering to the Lord for seven days. On the seventh day is a holy convocation; you shall not do any ordinary work."

1. Cross References
   Exodus 12:16
   On the first day you shall hold a holy assembly, and on the seventh day a holy assembly. No work shall be done on those days. But what everyone needs to eat, that alone may be prepared by you.
   Numbers 28:18
   On the first day there shall be a holy convocation. You shall not do any ordinary work.
   Numbers 28:25
   And on the seventh day you shall have a holy convocation. You shall not do any ordinary work.