Exodus 12:37-42 - The Israelites Leave Egypt
37 And the sons of Israel journeyed from Rameses to Succoth, the men being about six hundred thousand men on foot, apart from little ones. 38 And also a mixed multitude went up with them, and flocks, and herds, very much cattle. 39 And they baked unleavened cakes of the dough which they brought out of Egypt, for it was not leavened, because they were thrust out of Egypt and could not stay, neither had they prepared any food for a journey for themselves.
40 And the time that the sons of Israel lived in Egypt was four hundred and thirty years. 41 And it happened at the end of the four hundred and thirty years, even it was on this very day, all the armies of Jehovah went out from the land of Egypt. 42 It is a night to be much kept to Jehovah for bringing them out from the land of Egypt. This is that night of Jehovah to be kept by all the sons of Israel in their generations.