Leviticus 23:5-7

New Revised Standard Version Catholic Edition

⁵ In the first month, on the fourteenth day of the month, at twilight,^[a] there shall be a passover offering to the Lord, ⁶ and on the fifteenth day of the same month is the festival of unleavened bread to the Lord; 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.