To One in Paradise is written by American poet Edgar Alan Poe. In the above-stated lines, "Such language holds the solemn sea To the sands upon the shore", a literary device used here is Alliteration.
Alliteration is a literary device which is used by the writer to emphasize something that he/she wants to express. To spot an alliteration, it begins with the same consonant sound. For instance in the above line the same consonant sound of 's' depicts alliteration, , "Such language holds the solemn sea To the sands upon the shore"