Exodus 12:38-40

Revised Standard Version Catholic Edition

³⁸ A mixed multitude also went up with them, and very many cattle, both flocks and herds. ³⁹ And they baked unleavened cakes of the dough which they had brought 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 provisions.

⁴⁰ The time that the people of Israel dwelt in Egypt was four hundred and thirty years.