What does Exodus 12:39 mean?

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 victuals.

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.

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 victuals.

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 they bake with the dough which they have brought out from Egypt unleavened cakes, for it hath not fermented; for they have been cast out of Egypt, and have not been able to delay, and also provision they have not made for themselves.

And they baked the meal, which a little before they had brought out of Egypt in dough: and they made hearth cakes unleavened: for it could not be leavened, the Egyptians pressing them to depart, and not suffering them to make any stay; neither did they think of preparing any meat.

And they baked the dough that they brought forth out of Egypt into unleavened cakes, for it was not leavened; for they were driven out of Egypt, and could not wait; neither had they prepared for themselves any food.