Why does it say "Ki Hineni Mekim? [Ne'um Hashem]"?
Radak: You say that you did so with your strength ? you did not look at Me. You did with My help!
Malbim: The nation that I will stand against you will not be "l'Lo Davar" (13). Rather, it is via Hashem's word; now He decreed.
Which Goy will be against Yisrael?
Radak: Melech Ashur and his army.
Why does it specify "mi'Levo Chamas"?
Rashi: It is the northwest border of Yisrael.
Radak: You say that you took this via your strength; Yaravam took "mi'Levo Chamas Ad Yam ha'Aravah" (Melachim II, 14:25). When I will remove My face from you, a nation will oppress you in this land, and take you out of it.
Malbim: Just like Hashem saved you and returned your border from Levo Chamas until Yam ha'Aravah, now He will send a nation to oppress you there.
What is "Nachal ha'Aravah"?
Rashi: It is Nachal Mitzrayim, in the southwest border of Yisrael.
Radak: It is Yam ha'Aravah.
