Leviticus 23:4-8

⁴‘These are the appointed times of the Lord, holy convocations which you shall proclaim at the times appointed for them. ⁵In the first month, on the fourteenth day of the month at twilight is the Lord’s Passover. ⁶Then on the fifteenth day of the same month there is the Feast of Unleavened Bread to the Lord; for seven days you shall eat unleavened bread. ⁷On the first day you shall have a holy convocation; you shall not do any laborious work. ⁸But for seven days you shall present an offering by fire to the Lord. On the seventh day is a holy convocation; you shall not do any laborious work.’”