Leviticus 23:4

1 Yahweh spoke to Moses, saying,

2 Speak to the children of Israel, and tell them, The set feasts of Yahweh, which you shall proclaim to be holy convocations, even these are my set feasts.

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 manner of work: it is a Sabbath to Yahweh in all your dwellings.

4 These are the set feasts of Yahweh, even holy convocations, which you shall proclaim in their appointed season.

5 In the first month, on the fourteenth day of the month at even, is Yahweh`s Passover.

6 On the fifteenth day of the same month is the feast of unleavened bread to Yahweh: seven days you shall eat unleavened bread.

7 In the first day you shall have a holy convocation: you shall do no servile work.