Exodus 12:37-42 - The Israelites Leave Egypt
37 Then did the sons of Israel break up from Rameses, towards Succoth, - about six hundred thousand foot of men grown, besides little ones. 38 Moreover also, a mixed multitude, came up with them, - flocks also, and herds, exceeding much cattle, 39 Then baked they the dough which they had brought out of Egypt - into round unleavened cakes for it had not been leavened, - for they had been driven out of Egypt and could not tarry, and indeed no provisions, had they made ready for themselves.
40 Now, the time during which the sons of Israel dwelt in Egypt, was four hundred and thirty years. 41 And it came to pass at the end of four hundred and thirty years, yea it came to pass, on this self-same day, that all the hosts of Yahweh had come forth out of the land of Egypt. 42 A night of solemn observances, it is unto Yahweh, for bringing them forth out of the land of Egypt, - this same night, pertaineth to Yahweh, for solemn observances by all the sons of Israel to their generations.