In Parshas Bo, 11:5, the Torah says: "Every firstborn in the land of Egypt shall die, from the firstborn of Pharaoh who sits on his throne, to the firstborn of the slave-woman who is behind the ...
The splitting of the Parshiot usually make, at least, some sense. However, in the next two Parshiot the plagues are split up (7 in the first, 3 in the second). Are there sources on why this may be? ...