And it came to pass at the end of the four hundred and thirty years, even the selfsame day it came to pass, that all the hosts of the LORD went out from the land of Egypt.
At the end of the four hundred ... years, even the self-same day ... The date is repeated by the historian in order to show that the intimation made to Abraham (Genesis 15:13-16) was realized, and that the time of deliverance corresponded with the most minute exactness to the prophetic announcement.