1)
What is "Lo Yichheh"?
1.
Radak: He will not slacken, weaken or soften until he does Mishpat for the land.
2.
Malbim: His Nefesh and Emunah will not weaken. The Navi gives Simanim for Mashi'ach, for there were many false Meshichim.
2)
What is "Lo Yarutz"?
1.
Rashi: This is like Lo Yeratzetz. He will not need to break them, for "Ki Mal'ah ha'Aretz De'ah" (11:9).
3)
What is the meaning of "ul'Soraso Iyim Yeyachelu"?
1.
Rashi: They will heed them - "Ki Az Ehpoch El Amim