1)
Why will people in the ends of the land fear Him?
1.
Rashi: They will say, see those who feared Hashem, how He blessed them and raised them!
2.
Radak: They will see that Hashem is with us because we trusted in Him.
3.
Malbim (7-8): They will see that He has special Hashgachah over us and blesses us. This is like "Ki Imecha ha'Selichah Lema'an Tivarei" (130:4).