'Leavened' in the Bible
For seven days no leaven is to be seen in your houses: for whoever takes bread which is leavened will be cut off from the people of Israel, if he is from another country or if he is an Israelite by birth.
And the people took their bread-paste before it was leavened, putting their basins in their clothing on their backs.
And they made unleavened cakes from the paste which they had taken out of Egypt; it was not leavened, for they had been sent out of Egypt so quickly, that they had no time to make any food ready.
And Moses said to the people, Let this day, on which you came out of Egypt, out of your prison-house, be kept for ever in memory; for by the strength of his hand the Lord has taken you out from this place; let no leavened bread be used.
Unleavened cakes are to be your food through all the seven days; let no leavened bread be seen among you, or any leaven, in any part of your land.
Do not give the blood of my offering with leavened bread; and do not let the fat of my feast be kept all night till the morning.
With his peace-offering let him give cakes of leavened bread, as a praise-offering.
Take no leavened bread with it; for seven days let your food be unleavened bread, that is, the bread of sorrow; for you came out of the land of Egypt quickly: so the memory of that day, when you came out of the land of Egypt, will be with you all your life.
They are all untrue; they are like a burning oven; the bread-maker does not make up the fire from the time when the paste is mixed till it is leavened.
Let that which is leavened be burned as a praise-offering, let the news of your free offerings be given out publicly; for this is pleasing to you, O children of Israel, says the Lord.
Another story he gave to them: The kingdom of heaven is like leaven, which a woman took, and put in three measures of meal, till it was all leavened.
It is like leaven, which a woman put into three measures of meal, and it was all leavened.