1)
What do we learn from "Gam Kaspam... Lo Yuchal Lehatzilam"?
1.
Malbim: The first time, it sufficed to plunder money, and the fire of Hashem's Kin'ah for His name's honor consumed the land - Beis Hashem and Beis ha'Melech were burned.
2)
What is the meaning of "Ki Chalah Ach Nivhalah"?
1.
Radak: The eradication will be with sudden panic.
2.
Radak citing Targum Yonasan: They will be totally finished off.
3.
Malbim: First he says "Ki Chalah" - Hashem will eradicate all residents of the land. He retracts - "Ach Nivhalah", He does not want to eradicate them, only to terrify them so they will repent. This is like "v'Gam ba'Yamim ha'Hemah... Lo E'eseh Itechem Kalah" (Yirmeyahu 5:18).
