# My righteousness is near

"I will soon show my righteousness" 

# my salvation will go out

"I will save people" 

# my arm will judge the nations

"I will rule the nations with my power" 

# the coastlands

"the people who live on the coastlands" or "the people who live in the lands across the sea" 

# for my arm they will eagerly wait

"they will eagerly wait for me to do something" or "they will eagerly wait for me to save them"