Leviticus 23
6 Ref And on the fifteenth day of the same month is the feast of unleavened bread; for seven days let your food be unleavened bread.
7 Ref On the first day you will have a holy meeting; you may do no sort of field-work.
8 And every day for seven days you will give a burned offering to the Lord; and on the seventh day there will be a holy meeting; you may do no field-work.