Leviticus 23:4-11

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

5In the first month, on the fourteenth day of the month at even, is the LORD’S passover.

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

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

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

9And the LORD spake unto Moses, saying,

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

11and he shall wave the sheaf before the LORD, to be accepted for you: on the morrow after the sabbath the priest shall wave it.