Leviticus 23:4

4 These are the appointed festivals of the Lord, the holy convocations, which you shall celebrate at the time appointed for them

Leviticus 23:4 In-Context

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.
3 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.
4 These are the appointed festivals of the Lord, the holy convocations, which you shall celebrate at the time appointed for them
5 In the first month, on the fourteenth day of the month, at twilight, there shall be a passover offering to the Lord,
6 and on the fifteenth day of the same month is the festival of unleavened bread to the Lord; seven days you shall eat unleavened bread.
New Revised Standard Version Bible, copyright 1989, Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.