Since 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.
Here is the departure of the children of Israel out of Egypt; having obtained their dismission, they set forward without delay, and did not defer to a more convenient season. Pharaoh was now in a good mind; but they had reason to think he would not long continue so, and therefore it was no time to linger. We have here an account, 1.
Commenting on Exodus 12:37-42
And it came to pass at the end of four hundred and thirty years,.... As soon as completed: even the selfsame day it came to pass, that all the hosts of the Lord went out from the land of Egypt; which was the fifteenth of Nisan; and Jarchi says it was on the fifteenth of Nisan that the decree was made known to Abraham between...
UNLEAVENED BREAD. (Exo. 12:15-51) Seven days shall ye eat unleavened bread, &c.--This was to commemorate another circumstance in the departure of the Israelites, who were urged to leave so hurriedly that their dough was unleavened (Exo 12:39), and they had to eat unleavened cakes (Deu 16:3).
Commenting on Exodus 12:15-51