1 Corinthians 5:8
Therefore let us keep the feast, not with the old bread, leavened with malice and wickedness, but with the unleavened bread of sincerity and of truth.

Exodus 12:15
For seven days you must eat unleavened bread. On the first day you are to remove the yeast from your houses. Whoever eats anything leavened from the first day through the seventh must be cut off from Israel.

Exodus 12:20
You are not to eat anything leavened; eat unleavened bread in all your homes."

Exodus 13:3
So Moses told the people, "Remember this day, the day you came out of Egypt, out of the house of slavery; for the LORD brought you out of it by the strength of His hand. And nothing leavened shall be eaten.

Exodus 13:7
Unleavened bread shall be eaten during those seven days. Nothing leavened may be found among you, nor shall yeast be found anywhere within your borders.

Exodus 23:15
You are to observe the Feast of Unleavened Bread as I commanded you: At the appointed time in the month of Abib you are to eat unleavened bread for seven days, because that was the month you came out of Egypt. No one may appear before Me empty-handed.

Exodus 34:18
You are to observe the Feast of Unleavened Bread. For seven days at the appointed time in the month of Abib, you are to eat unleavened bread as I commanded you. For in the month of Abib you came out of Egypt.

Leviticus 23:5
The Passover to the LORD begins at twilight on the fourteenth day of the first month.

Numbers 9:13
But the man who is ceremonially clean, is not on a journey, and still fails to observe the Passover, is to be cut off from his people, because he did not present the LORD's offering at its appointed time. That man will bear the consequences of his sin.