Leviticus 23:1-3

New Revised Standard Version, Anglicised

Appointed Festivals

23 The Lord spoke to Moses, saying: ² Speak to the people of Israel and say to them: These are the appointed festivals of the Lord that you shall proclaim as holy convocations, my appointed festivals.

The Sabbath, Passover, and Unleavened Bread

³ For six days shall work be done; but the seventh day is a sabbath of complete rest, a holy convocation; you shall do no work: it is a sabbath to the Lord throughout your settlements.