Leviticus 23:5-11

5The Lord’s Passover begins at twilight on the fourteenth day of the first month.

6On the fifteenth day of that month the Lord’s Festival of Unleavened Bread begins; for seven days you must eat bread made without yeast.

7On the first day hold a sacred assembly and do no regular work.

8For seven days present a food offering to the Lord. And on the seventh day hold a sacred assembly and do no regular work.’ ”

9The Lord said to Moses,

10“Speak to the Israelites and say to them: ‘When you enter the land I am going to give you and you reap its harvest, bring to the priest a sheaf of the first grain you harvest.

11He is to wave the sheaf before the Lord so it will be accepted on your behalf; the priest is to wave it on the day after the Sabbath.