Deuteronomy 16:3

16:3 Thou shalt eat no leavened bread with it; seven days shalt thou eat unleavened bread therewith, [even] the bread of affliction; for thou camest forth out of the land of Egypt in haste: that thou mayest remember the day when thou camest forth out of the land of Egypt all the days of thy life.

Deuteronomy 16:5

16:5 Thou mayest not sacrifice the passover within any of thy gates, which the LORD thy God giveth thee:

Deuteronomy 16:8

16:8 Six days thou shalt eat unleavened bread: and on the seventh day [shall be] a solemn assembly to the LORD thy God: thou shalt do no work [therein].