Leviticus 23:5-11

5The Passover to the Lord comes in the first month, at twilight on the fourteenth day of the month.

6The Festival of Unleavened Bread to the Lord is on the fifteenth day of the same month. For seven days you must eat unleavened bread.

7On the first day you are to hold a sacred assembly; you are not to do any daily work.

8You are to present a food offering to the Lord for seven days. On the seventh day there will be a sacred assembly; do not do any daily work.”

9The Lord spoke to Moses:

10“Speak to the Israelites and tell them: When you enter the land I am giving you and reap its harvest, you are to bring the first sheaf of your harvest to the priest.

11He will present the sheaf before the Lord so that you may be accepted; the priest is to present it on the day after the Sabbath.