# Look

"Take notice!"

# the ends of the earth

"the farthest places of the earth" or "the entire earth" 

# the daughter of Zion

"Daughter" represents the people of Jerusalem (Zion).

# See, his reward is with him, and his recompense is going before him

The word "recompense" stands for the people Yahweh has rescued. They are his "reward" for his work.