Exodus 12:40-42

Darby Translation

⁴⁰ And the residence of the children of Israel that they resided in Egypt was four hundred and thirty years.

⁴¹ And it came to pass at the end of the four hundred and thirty years, on that same day it came to pass that all the hosts of Jehovah went out from the land of Egypt.

⁴² It is a night of observance to Jehovah, because of their being brought out from the land of Egypt: that same night is an observance to Jehovah for all the children of Israel in their generations.