What do they bite with their teeth?
Rashi: They eat meat of fattened animals. My nation, who err after them, feed it to them.
Radak: They flatter them. They harm them as if they bite them. This is like "v'Nataros Neshikos Sonei" (Mishlei 27:6}.
Radak citing Targum Yonasan: Bread, meat and other foods.
What do we learn from "v'Kar'u Shalom"?
Rashi: When they feed them, they prophesize Shalom for them. Radak ? they tell them, you need not fear the Nevi'im who prophesize punishments for you.
What is the meaning of "v'Kideshu Alav Milchamah"?
Rashi: He summonses (prophesizes) war for him. Malbim ? this is like the episode of Bar Hedya 1 .
Radak: If they do not give to the Navi food and drink like he requests - "Atif Lecha la'Yayin vela'Shechar" (2:11), false Nevi'im gang up and fight him with evil words.
Brachos 56a: Bar Hedya interpreted dreams. He interpreted favorably for one who paid him, and unfavorably for one who did not.
