The word "felicity" here means a sense of satisfaction, almost catharsis, as the speaker has found closure in his prayer and happiness.
        
                    
             
        
        
        
your not wrong but where we gonna get the beef tho
 
        
                    
             
        
        
        
Sorry but more information is needed!! But lemme guess, does this have anything related about Edgar Allan Poe’s Tell-tale heart story??
        
             
        
        
        
The poetic device that is used by the poet when he repeats the -ll sound is referred to as;
Alliteration is a poetic device that involves the repetition of the initial consonant sounds in a group of closely related words. The -ll sound is a consonant. 
So, when the poet uses it repeatedly in a group of nearby words and sentences, he is applying alliteration. 
Alliteration is important because it adds rhythm to a poem. It also improves memorization since it involves words that sound alike.
Conclusively, the device used by the poet in the above instance is alliteration.
Learn more here:
brainly.com/question/21825251
 
        
                    
             
        
        
        
Imagery mostly. I guess you could say alliteration for "see the silver"