Exodus 12:39-41

Complete Jewish Bible

³⁹ They baked matzah loaves from the dough they had brought out of Egypt, since it was unleavened; because they had been driven out of Egypt without time to prepare supplies for themselves.

⁴⁰ The time the people of Isra’el lived in Egypt was 430 years. ⁴¹ At the end of 430 years to the day, all the divisions of Adonai left the land of Egypt.