Exodus 12:29-39

And it came to pass at midnight, that Jehovah smote all the first-born in the land of Egypt, from the first-born of Pharaoh that sat on his throne unto the first-born of the captive that was in the dungeon; and all the first-born of cattle. And Pharaoh rose up in the night, he, and all his servants, and all the Egyptians; and there was a great cry in Egypt; for there was not a house where there was not one dead. And he called for Moses and Aaron by night, and said, Rise up, get you forth from among my people, both ye and the children of Israel; and go, serve Jehovah, as ye have said. Take both your flocks and your herds, as ye have said, and be gone; and bless me also. And the Egyptians were urgent upon the people, to send them out of the land in haste; for they said, We are all dead men. And the people took their dough before it was leavened, their kneading-troughs being bound up in their clothes upon their shoulders. And the children of Israel did according to the word of Moses; and they asked of the Egyptians jewels of silver, and jewels of gold, and raiment: and Jehovah gave the people favor in the sight of the Egyptians, so that they let them have what they asked. And they despoiled the Egyptians. And the children of Israel journeyed from Rameses to Succoth, about six hundred thousand on foot that were men, besides children. And a mixed multitude went up also with them; and flocks, and herds, even very much cattle. And they baked unleavened cakes of the dough which they brought forth out of Egypt; for it was not leavened, because they were thrust out of Egypt, and could not tarry, neither had they prepared for themselves any victuals.