Thematic Bible: During the feast of passover

You will eat unleavened bread for seven days. Surely on the first day you shall remove yeast from your houses, because anyone [who] eats [food with] yeast from the first day until the seventh day--that person will be cut off from Israel. It will be for you on the first day a holy assembly and on the seventh day a holy assembly; no work will be done on them; only what is eaten by every person, it alone will be prepared for you. "And you will keep the Feast of Unleavened Bread, because on this very day I brought out your divisions from the land of Egypt, and you will keep this day for your generations as a lasting statute. read more.
On the first [day], on the fourteenth day of the month, in the evening, you will eat unleavened bread until the evening of the twenty-first day of the month. For seven days yeast must not be found in your houses, because {anyone eating food with yeast} will be cut off from the community of Israel--[whether] an alien or a native of the land. You will eat no [food with] yeast; in all of your dwellings you will eat unleavened bread."