Analysis of Doubting Heart

WHERE are the swallows fled?  
   Frozen and dead,  
Perchance, upon some bleak and stormy shore.  
   O doubting heart!  
 Far over purple seas  
 They wait, in sunny ease,  
 The balmy southern breeze,  
To bring them to their northern homes once more.  

Why must the flowers die?  
   Prison’d they lie
In the cold tomb, heedless of tears or rain.  
   O doubting heart!  
 They only sleep below  
 The soft white ermine snow,  
 While winter winds shall blow,
To breathe and smile upon you soon again.  

The sun has hid its rays  
   These many days;  
Will dreary hours never leave the earth?  
   O doubting heart!
 The stormy clouds on high  
 Veil the same sunny sky,  
 That soon (for spring is nigh)  
Shall wake the summer into golden mirth.  

Fair hope is dead, and light
   Is quench’d in night.  
What sound can break the silence of despair?  
   O doubting heart!  
 Thy sky is overcast,  
 Yet stars shall rise at last,
 Brighter for darkness past,  
And angels’ silver voices stir the air.