Exodus 12:39-41

New Century Version

³⁹ The Israelites used the dough they had brought out of Egypt to bake loaves of bread without yeast. The dough had no yeast in it, because they had been rushed out of Egypt and had no time to get food ready for their trip.

⁴⁰ The people of Israel had lived in Egypt for four hundred thirty years; ⁴¹ on the very day the four hundred thirty years ended, the Lord’s divisions of people left Egypt.