They shall howl, saying, How is it broken down! how hath Moab turned the back with shame! so shall Moab be a derision and a dismaying to all them about him.
How is it broken down. "It" - i:e., Moab.
How ... how - prodigious, yet sure to happen.
How hath Moab turned the back - not daring to show her face.
So shall Moab be a derision, and a dismaying to all - a derision to some, a dismaying to others, in beholding such a judgment of God, fearing a like fate for themselves.