Why does he now prophesize about the Nevi'im?
Malbim: Before he discussed the shepherds. Also the [false] Nevi'im deceived the flock (nation).
Why is Yirmeyah's heart broken due to the Nevi'im?
Rashi: It is due to the false Nevi'im who say 'you will have Shalom.' Radak - if they would not do so, Yisrael would repent due to the rebuke of Nevi'ei Hashem. However, they tell everyone to do like their heart desires, for Hashem said that evil will not come on us.
Malbim: It is due to the punishments that I see [will come on them].
What is the meaning of "Rachafu"?
Rashi: They go and flutter, like a bird's wings when it is Merachef (hovers) above its nest. Radak - this is like "Merachefes Al Pnei ha'Mayim" (Bereishis 1:2).
What is "uch'Gever Avaro Yayin"?
Radak: Wine passed on him. I.e. it overpowered him and he became drunk, and he does not know what to do.
Malbim: After Nevu'ah, I was like one who drank wine, and it passed from him. He is still befuddled. At the time of Nevu'ah, it is as if I was drunk.
Why does he shake "Mipnei Hashem"?
Rashi: I hear from Him this evil decree.
Radak: It is due to Chilul Hashem via these false Nevi'im.
Malbim: At the time of Nevu'ah, it is as if I was drunk, due to 'seeing' Hashem and hearing His Nevu'ah.
Why does it say "u'Mipnei Devar Kadsho"?
Radak: His words are profaned through them. They say that their words are Hashem's.
Malbim: After Nevu'ah, I was like one whose wine passed from him, due to His Nevu'ah.
