Exodus 12:34-39

34And the people took their dough before it was leavened; their kneading-troughs bound up in their clothes upon their shoulders.

35And the children of Israel had done according to the word of Moses, and they had asked of the Egyptians utensils of silver, and utensils of gold, and clothing.

36And Jehovah had given the people favour in the eyes of the Egyptians, and they gave to them; and they spoiled the Egyptians.

37And the children of Israel journeyed from Rameses to Succoth, about six hundred thousand on foot [that were] men, besides children.

38And a mixed multitude went up also with them; and flocks and herds — very much cattle.

39And they baked the dough that they brought forth out of Egypt into unleavened cakes, for it was not leavened; for they were driven out of Egypt, and could not wait; neither had they prepared for themselves any food.