Exodus 12:31-41

Then he called for Moses and Aaron at night and said, “Rise up, get out from among my people, both you and the sons of Israel; and go, worship the LORD, as you have said. Take both your flocks and your herds, as you have said, and go, and bless me also.” The Egyptians urged the people, to send them out of the land in haste, for they said, “We will all be dead.” So the people took their dough before it was leavened, with their kneading bowls bound up in the clothes on their shoulders. Now the sons of Israel had done according to the word of Moses, for they had requested from the Egyptians articles of silver and articles of gold, and clothing; and the LORD had given the people favor in the sight of the Egyptians, so that they let them have their request. Thus they plundered the Egyptians. Now the sons of Israel journeyed from Rameses to Succoth, about six hundred thousand men on foot, aside from children. A mixed multitude also went up with them, along with flocks and herds, a very large number of livestock. They baked the dough which they had brought out of Egypt into cakes of unleavened bread. For it had not become leavened, since they were driven out of Egypt and could not delay, nor had they prepared any provisions for themselves. Now the time that the sons of Israel lived in Egypt was four hundred and thirty years. And at the end of four hundred and thirty years, to the very day, all the hosts of the LORD went out from the land of Egypt.