Leviticus 23:6-8

New Revised Standard Version, Anglicised

⁶ and on the fifteenth day of the same month is the festival 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 work at your occupations. ⁸ For seven days you shall present the Lord’s offerings by fire; on the seventh day there shall be a holy convocation: you shall not work at your occupations.