1)
What do we learn from "va'Yikacheni Hashem me'Acharei ha'Tzon"?
1.
Radak: I did not willingly abandon my work. Hashem took me from in back of the flock ? I used to go in back of them and shepherd them. He put Ru'ach Nevu'ah on me, and forced me to prophesize. How can you tell me not to prophesize? Hashem tells me to prophesize about Yaravam and his kingdom!
2)
What do we learn from "El Ami Yisrael"?
1.
Malbim: Hashem sent me only to Yisrael, the 10 tribes, and not to Yehudah, like you tell me [to prophesize to Yehudah].
