Why does the Torah insert the (otherwise superfluous) word "Kol ha'Eidah"?
Rashi: Because all of the previous generation on whom Hashem had decreed had died, and the Pasuk is now referring to the next generation, about whom the Torah writes - in Va'eschanan Devarim, 4:4 - "Chayim Kulchem ha'Yom".
R. Bachye: Because Edom cme out to meet ethem iwith the sword, the Torah teaches us that Yirael arrived at Hor ha'Hat without losing a man.
Why was the mountain on which Aharon died called "Hor ha'Har"?
Rashi and R. Bachye (citing the Tanchuma): Because it was a small mountain atop a large one, like a small apple on top of a large one (and Aharon was buried on the tolp section _- R. Bachye). 1
R. Bachye: As the Torah writes in Pasuk 28 "Vayamas Aharon Sham be'Rosh ha'Har".
Why did the Cloud that went in front of Yisrael to flatten all the mountains not flatten Hor ha'Har?
Rashi: The Cloud flattened all the mountains in its path except for three - Har Sinai (for the Torah); Har N'vo (for the burial of Moshe, and Hor ha'Har (for the burial of Aharon).
