1)
Is this in the entire land?
1.
Radak #1: It is in all of Eretz Yisrael.
2.
Radak #2: It is in the entire world. Also among the nations, only the good ones will remain, who serve Hashem.
2)
What is the meaning of "Pi Shenayim Bah Yikaresu Yigva'u"?
1.
Radak: Some will be cut off via the sword, and some will die via plague.
2.
Malbim: Then man's swear will be aroused against his colleague, and only a third will remain ? those who believe in the true Emunah.
3)
What is the meaning of "veha'Shelishis Yivaser Bah"?
1.
Rashi: They will convert and live.
