Leviticus 23:4-8

4These are the set feasts of Jehovah, holy convocations, which ye shall proclaim in their seasons:

5In the first month, on the fourteenth of the month, between the two evenings, is the passover to Jehovah.

6And on the fifteenth day of this month is the feast of unleavened bread to Jehovah; seven days shall ye eat unleavened bread.

7On the first day ye shall have a holy convocation: no manner of servile work shall ye do.

8And ye shall present to Jehovah an offering by fire seven days; on the seventh day is a holy convocation: no manner of servile work shall ye do.