Exodus 12:37-42 - The Israelites Leave Egypt
37 Thus took the children of Israel their journey from Rameses to Succoth; six hundred thousand men of foot, beside children. 38 And much common people went also with them, and sheep, and oxen, and cattle exceeding much. 39 And they baked sweet cakes of the dough which they brought out of Egypt, for it was not soured: because they were thrust out of Egypt and could not tarry, neither had they prepared them any other provision of meat.
40 And the time of the dwelling of the children of Israel, which they dwelt in Egypt, was four hundred and thirty years. 41 And when the four hundred and thirty years were expired, even the self same day departed all the hosts of the LORD out of the land of Egypt. 42 This is a night to be observed to the LORD, because he brought them out of the land of Egypt. This is a night of the LORD, to be kept of all the children of Israel and of their generations after them.