'Bread Without Yeast' in the Bible

They baked cakes of bread without yeast using the dough they had brought from Egypt, for it was made without yeast -- because they were thrust out of Egypt and were not able to delay, they could not prepare food for themselves either.

You must not eat any yeast with it. Instead, for seven days eat bread without yeast the bread of affliction because you left the land of Egypt in haste. Remember the day you went out of the land of Egypt for the rest of your lives.

Eat bread without yeast for six days. Then on the seventh day, hold an assembly to the LORD your God. Don't do any work."

So then, let us celebrate the festival, not with the old yeast, the yeast of vice and evil, but with the bread without yeast, the bread of sincerity and truth.