Leviticus 23:3-5

American Standard Version

³ Six days shall work be done: but on the seventh day is a sabbath of solemn rest, a holy convocation; ye shall do no manner of work: it is a sabbath unto Jehovah in all your dwellings.

⁴ These are the set feasts of Jehovah, even holy convocations, which ye shall proclaim in their appointed season. ⁵ In the first month, on the fourteenth day of the month ^[a]at even, is Jehovah’s passover.