Deuteronomy 16:3-5

21st Century King James Version

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.

⁴ And there shall be no leavened bread seen with thee in all thy borders seven days, neither shall there anything of the flesh, which thou sacrificed the first day at evening, remain all night until the morning.

⁵ Thou mayest not sacrifice the Passover within any of thy gates which the Lord thy God giveth thee;