Why does Hashem command Moshe to perform each macah (plague)? Hashem can perform the Macot himself (by sending malachim).
When we read about the 10 plagues everything is repeated twice: once when Hashem commands Moshe and a second time when Moshe executes the plague. The Torah could simply write "and he did so" after ...
In Moshe's warning to Pharaoh (in Hashem's name) of the fourth plague, arov, he adds (Ex. 8:18-19): וְהִפְלֵיתִי בַיּוֹם הַהוּא אֶת-אֶרֶץ גֹּשֶׁן אֲשֶׁר עַמִּי עֹמֵד עָלֶיהָ לְבִלְתִּי הֱיוֹת-שָׁם ...
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? ...