Leviticus 23:7

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

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

6 And on the fifteenth day of the same month is the feast of unleavened bread unto Jehovah: seven days ye shall eat unleavened bread.

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

8 But ye shall offer an offering made by fire unto Jehovah seven days: in the seventh day is a holy convocation; ye shall do no servile work.

9 And Jehovah spake unto Moses, saying,

10 Speak unto the children of Israel, and say unto them, When ye are come into the land which I give unto you, and shall reap the harvest thereof, then ye shall bring the sheaf of the first-fruits of your harvest unto the priest: