No leaven shall be present in all your confines for seven days. And by morning, there shall not remain any of the flesh which was immolated on the first day in the evening.
For seven days, you shall eat unleavened bread. On the first day there shall be no leaven in your houses. Whoever will consume anything leavened, from the first day, even until the seventh day, that soul shall perish from Israel.
You shall not immolate the blood of my victim over leaven; and there shall not remain, in the morning, any of the victim of the Solemnity of the Passover.
He spoke another parable to them: "The kingdom of heaven is like leaven, which a woman took and hid in three measures of fine wheat flour, until it was entirely leavened."