Bible Verses About Leaven: During the feast of the passover

Seven days ye eat unleavened things; only--in the first day ye cause leaven to cease out of your houses; for any one eating anything fermented from the first day till the seventh day, even that person hath been cut off from Israel.

`And in the first day is a holy convocation, and in the seventh day ye have a holy convocation; any work is not done in them, only that which is eaten by any person--it alone is done by you,

and ye have observed the unleavened things, for in this self-same day I have brought out your hosts from the land of Egypt, and ye have observed this day to your generations--a statute age-during.

`In the first month , in the fourteenth day of the month, in the evening, ye do eat unleavened things until the one and twentieth day of the month, at evening;

seven days leaven is not found in your houses, for any one eating anything fermented--that person hath been cut off from the company of Israel, among the sojourners or among the natives of the land;

anything fermented ye do not eat, in all your dwellings ye do eat unleavened things.'