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It's very rare to encounter Christians who know the difference between yeasted bread and leavened bread; and I suspect that some of the fault for that lies with modern translations like the NIV. For example:
†. Gen 19:3 . . But he insisted so strongly that they did go with him and entered his house. He prepared a meal for them, baking bread without yeast, and they ate.
The Hebrew word that the NIV's authors translated "bread without yeast" is matstsah (mats-tsaw') which just simply means sweet (as opposed to sour; viz: fermented).
If you've never done any baking; let me tell you: there's no need to add cultured yeast to dough to make it ferment; no, it will ferment all by itself given enough time to do so. Adding cultured yeast simply saves time by speeding up the process. Back in Lot's day, cultured yeast wasn't widely available so what they would do is keep on hand some fermented dough to mix in with fresh unfermented dough. I don't know how they learned that trick but apparently it was very effective. Leaven, then, doesn't indicate yeast per se, no, it indicates the fermented dough that people kept on hand to mix in with their fresh dough; and spiritually speaking: that is a really big no-no for Christians.
†. 1 Cor 5:6-8 . . Do you not know that a little leaven leavens the whole lump of dough? Clean out the old leaven, that you may be a new lump, just as you are in fact unleavened. For Christ our Passover also has been sacrificed. Let us therefore celebrate the feast, not with old leaven, nor with the leaven of malice and wickedness, but with the unleavened bread of sincerity and truth.
An additional meaning of matstsah is: greedily devouring for sweetness; in other words: eating dough as fresh, and as soon as possible before it has a chance to ferment. So even if you were to mix up a batch of dough with lots of cultured yeast, it wouldn't qualify as leavened bread if you baked it right away before the yeast had a chance to turn it. But if you were to mix up a bit of fermented dough with fresh dough, then there's no way you could bake it fast enough because the fresh dough becomes leavened the instant fermented dough is added to it.
Buen Camino
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