The author uses Onomatopoeia in this stanza with the word "babbling." Onomatopoeia is a figure of speech that presents the written sound of the things it intends to describe. I<em>n this case, "babbling" is creating the sound effects describing the low, continuous noise of water flowing over stones, which makes the description more interesting.</em>
Repeating a sequence of words at the beginning of a phrase is called 'Anaphora' in rhetoric. It is used in speeches to give emphasis to the point being discussed. Thus, the speaker wanted to emphasize his point and encourage his listeners to do something as well.
