Since their dough had no leaven, the people baked what they had brought out of Egypt into unleavened loaves. For when they had been driven out of Egypt, they could not delay and had not prepared any provisions for themselves.

Matthew 13:33
He told them still another parable: "The kingdom of heaven is like leaven that a woman took and mixed into three measures of flour, until all of it was leavened."

Exodus 6:1
But the LORD said to Moses, "Now you will see what I will do to Pharaoh, for because of My mighty hand he will let the people go; because of My strong hand he will drive them out of his land."

Exodus 11:1
Then the LORD said to Moses, "I will bring upon Pharaoh and Egypt one more plague. After that, he will allow you to leave this place. And when he lets you go, he will drive you out completely.

Exodus 12:31
Then Pharaoh summoned Moses and Aaron by night and said, "Get up, leave my people, both you and the Israelites! Go, worship the LORD as you have requested.

Exodus 12:33
And in order to send them out of the land quickly, the Egyptians urged the people on. "For otherwise," they said, "we are all going to die!"

Exodus 12:34
So the people took their dough before it was leavened, carrying it on their shoulders in kneading bowls wrapped in clothing.

And they baked unleavened cakes of the dough which they brought forth out of Egypt, for it was not leavened; because they were thrust out of Egypt, and could not tarry, neither had they prepared for themselves any victual.