Leviticus 23:6-9 English Standard Version (ESV)

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. 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.”

9. And the Lord spoke to Moses, saying,

Leviticus 23