Exodus 12:34-39

34So the people took their dough before it was leavened, their kneading bowls being bound up in their clothes on their shoulders.

35Now the Israelites had acted in accordance with the word of Moses; and they had asked the Egyptians for articles of silver and articles of gold, and clothing.

36The Lord gave the people favor in the sight of the Egyptians, so that they gave them what they asked. And so they plundered the Egyptians [of those things].

37Now the Israelites journeyed from Rameses to Succoth, about six hundred thousand men on foot, besides [the women and] the children.

38A mixed multitude [of non-Israelites from foreign nations] also went with them, along with both flocks and herds, a very large number of livestock.

39And they baked unleavened cakes of the dough which they brought from Egypt; it was not leavened, since they were driven [quickly] from Egypt and could not delay, nor had they prepared any food for themselves.