Leviticus 23:2-4

Revised Standard Version

² “Say to the people of Israel, The appointed feasts of the Lord which you shall proclaim as holy convocations, my appointed feasts, are these. 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.