Exodus 12:19
For seven days leaven is not to be found in your houses. Indeed, any person who eats anything leavened, is to be cut off from the congregation of Israel, whether an alien or a native of the land.
Exodus 12:15
You are to eat unleavened bread for seven days. On the first day be sure to remove all the leaven from your houses, because any person who eats anything leavened from the first day until the seventh will be cut off from Israel.
Exodus 12:48
If an alien who resides with you wants to observe the Passover to the LORD, every male in his household must be circumcised, and then he may come near to observe it. He is to be like a native of the land, but no uncircumcised person is to eat it.
Exodus 12:43
The LORD told Moses and Aaron, "These are the regulations for the Passover: No foreigner is to eat it,
Exodus 23:15
You are to observe the Festival of Unleavened Bread. As I commanded you, you are to eat unleavened bread for seven days at the appointed time in the month Abib, because in it you came out of Egypt. No one is to appear before me empty handed.
Exodus 34:18
"You are to observe the Festival of Unleavened Bread. For seven days, at the appointed time in the month Abib, you are to eat unleavened bread as I commanded you, for in the month Abib you came out of Egypt.
Numbers 9:13
Now as to the person who is clean and isn't traveling, but fails to observe the Passover, that person is to be eliminated from his people, because he didn't bring an offering to the LORD at its appointed time. That person is to bear his sin.
Deuteronomy 16:3
You must not eat any yeast with it. Instead, for seven days eat bread without yeast the bread of affliction because you left the land of Egypt in haste. Remember the day you went out of the land of Egypt for the rest of your lives.
1 Corinthians 5:7-8
Get rid of the old yeast so that you may be a new batch of dough, since you are to be free from yeast. For the Messiah, our Passover, has been sacrificed.