Exodus 12:15
Seven days shall you eat unleavened bread: in the first day there shall be no leaven in your houses; whosoever shall eat any thing leavened, from the first day until the seventh day, that soul shall perish out of Israel.

Exodus 23:15
Thou shalt keep the feast of unleavened bread. Seven days shalt thou eat unleavened bread, as I commanded thee, in the time of the month of new corn, when thou didst come forth out of Egypt: thou shalt not appear empty before me.

Exodus 34:18
Thou shalt keep the feast of the unleavened bread. Seven days shalt thou eat unleavened bread, as I commanded thee in the time of the month of the new corn: for in the month of the spring time thou camest out from Egypt.

Leviticus 23:6
And the fifteenth day of the same month is the solemnity of the unleavened bread of the Lord. Seven days shall you eat unleavened bread.

Deuteronomy 16:3
Thou shalt not eat with it leavened bread: seven days shalt thou eat without leaven, the bread of affliction, because thou camest out of Egypt in fear: that thou mayst remember the day of thy coming out of Egypt, all the days of thy life.