1)
Why should he not prophesize more in Beis Kel?
1.
Rashi: Here we mention only the name of idolatry.
2.
Malbim: Do not prophesize here for bread, for it is Mikdash Melech. The king's Beis ha'Mikdash is in Beis Kel, i.e. the house of the calves that the king sanctified to the Mikdash to do his Avodah. They will not finance Nevi'im who prophesize against the calves! Also, you will not straighten the people ? it is the capitol, and they will not accept Musar that is bad in the nation's eyes.
