Exodus 12:34-39

34So the people took their dough before it was leavened, carrying it on their shoulders in kneading bowls wrapped in clothing.

35Furthermore, the Israelites acted on Moses’ word and asked the Egyptians for articles of silver and gold, and for clothing. 36And the LORD gave the people such favor in the sight of the Egyptians that they granted their request. In this way they plundered the Egyptians.

37The Israelites journeyed from Rameses to Succoth1 with about 600,000 men on foot, besides women and children. 38And a mixed multitude also went up with them, along with great droves of livestock, both flocks and herds.

39Since their dough had no leaven, the people baked what they had brought out of Egypt into unleavened loaves. For when they had been driven out of Egypt, they could not delay and had not prepared any provisions for themselves.