Leviticus 23:8

5 in the first month, on the fourteenth of the month, between the evenings, [is] the passover to Jehovah;

6 and on the fifteenth day of this month [is] the feast of unleavened things to Jehovah; seven days unleavened things ye do eat;

7 on the first day ye have a holy convocation, ye do no servile work;

8 and ye have brought near a fire-offering to Jehovah seven days; in the seventh day [is] a holy convocation; ye do no servile work.`

9 And Jehovah speaketh unto Moses, saying,

10 `Speak unto the sons of Israel, and thou hast said unto them, When ye come in unto the land which I am giving to you, and have reaped its harvest, and have brought in the sheaf, the beginning of your harvest unto the priest,

11 then he hath waved the sheaf before Jehovah for your acceptance; on the morrow of the sabbath doth the priest wave it.