1)
What is the significance of "va'Yma'anu Lehakshiv"?
1.
Malbim: First they did not want to listen at all.
2)
What is "Soreres"?
1.
Radak: It is crooked, like "k'Parah Sorerah" (Hoshe'a 4:16). One who does not want to listen to one who calls to him, he makes his shoulder crooked and does not want to turn to him.
2.
Malbim: They turned away the shoulder so they would not see what the Nevi'im show to them.
3)
Why does it add "v'Azneihem Hichbidu mi'Shemo'a"?
1.
Malbim: Afterwards, when Divrei ha'Nevi'im came in a loud voice, so they hearkened from afar, they made their ears heavy not to hear.