Why does the Torah write "ka'Eis Machar" (and not just 'Machar', as it did by Makas Dever - See Pasuk 5)?
Oznayim la'Torah: Which it was possible to do seeing as Makas Barad occurred by day, but was possible to do by Makas Bechoros, since it occurred by night
What are the implications of the term "Kaveid Me'od"?
Oznayim la'Torah: If the hail would merely have destroyed the trees, the term "Kaveid" would have been applicable; now that it contained fire which burned the broken pieces, it became "Kaveid Me'od".
Why does the Torah add "be'Mitzrayim" - here and in Pasuk 24?
Ramban: This suggests that there were plagues of hail that were just as heavy as this one, 1 and it is only in Egypt, where it never rains, and where hail was a mind-boggling phenomenon, that the plague was unique. 2
The current Pesukim relate what Hashem instructed Moshe to say to Par'oh. Why does the Torah not inform us that Moshe passed on the message?