Exodus 12:39-41

Lexham English Bible

³⁹ And they baked the dough that they had brought out from Egypt as cakes, unleavened bread, because it had no yeast when they were driven out from Egypt, and they were not able to delay, and also they had not made provisions for themselves.

⁴⁰ And the period of dwelling of the Israelites^[a] that they dwelled in Egypt was four hundred and thirty years. ⁴¹ And at the end of four hundred and thirty years, on this exact day, all of Yahweh’s divisions went out from the land of Egypt.