# should I not have compassion for Nineveh, that great city ... animals?

"I am certainly right to have compassion on Nineveh, that important city ... animals." 

# in which there are more

This can also be the beginning of a new sentence. Alternate translation: "There are more" or "Nineveh has more"

# who do not know the difference between their right hand and their left hand

This may be a way of saying that they do not know the difference between right and wrong.