1)
What is the meaning of "Har Nofel Yibol"?
1.
Rashi: A mountain that falls, its height becomes earth, there is hope to benefit from it. Yibol is an expression of produce.
2.
Ibn Ezra: Some say that Nofel is [giant,] like "ha'Nefilim".
3.
Ibn Ezra: Some say that it will fall and wither.
4.
Malbim: Natural things do not cease to exist. If a mountain falls, it does not perish; a new mountain will sprout from the earth. Many scientists agree that mountains sprout.
2)
What does the verse teach about a rock that is uprooted?
1.
Rashi: Also it Yibol.
2.
Malbim: Also such a rock is not lost. It is merely relocated; it remains like it was.
