How are imagery figurative language and sounds used in The Destruction of Sennacherib?

image: a literal or concrete representation of a sensory experience or of an object that can be known by one or more senses. Ezra Pound defines it as "a radiant node or cluster into which, out of which, and through which ideas are constantly rushing." In Swift's "A Description of the Morning," the "ruddy morn" of line 2 is an image; so, too, are the "broomy stumps" of line 9. Loosely, imagery may refer to all figures of speech in a poem.