6 Seven days shalt thou eat unleavened bread: and on the seventh day shall be the solemnity of the Lord.
Exodus 13:6 Cross References - DouayRheims
Exodus 12:15-20
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.
16 The first day shall be holy and solemn, and the seventh day shall be kept with the like solemnity: you shall do no work in them, except those things that belong to eating.
17 And you shall observe the feast of the unleavened bread: for in this same day I will bring forth your army out of the land of Egypt, and you shall keep this day in your generations by a perpetual observance.
18 The first month, the fourteenth day of the month, in the evening, you shall eat unleavened bread, until the one and twentieth day of the same month, in the evening.
19 Seven days there shall not be found any leaven in your houses: he that shall eat leavened bread, his soul shall perish out of the assembly of Israel, whether he be a stranger or born in the land.
20 You shall not eat any thing leavened: in all your habitations you shall eat unleavened bread.
Exodus 34:18
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 23:8
8 But you shall offer sacrifice in fire to the Lord seven days. And the seventh day shall be more solemn, and more holy: and you shall do no servile work therein.