Leviticus 23:3-5

Revised Standard Version Catholic Edition

³ Six days shall work be done; but on the seventh day is a sabbath of solemn rest, a holy convocation; you shall do no work; it is a sabbath to the Lord in all your dwellings.

Passover and Unleavened Bread

⁴ “These are the appointed feasts of the Lord, the holy convocations, which you shall proclaim at the time appointed for them. ⁵ In the first month, on the fourteenth day of the month in the evening,^[a] is the Lord’s passover.