The mood in the octave is somber, while the sestet is accepting and hopeful, with the volta marking the point of transition.
The mood of the octave in the poem 'Sonnet XIX' by John Milton is somber, portraying the speaker's contemplation of his diminishing abilities and the fear of not fulfilling his purpose.
Contrastingly, the mood of the sestet shifts to being more accepting and hopeful, emphasizing the idea that serving God does not always require direct action but can also be achieved through patience and faith.
The volta in the sonnet typically marks the transition point between the problem/question presented in the octave and its resolution in the sestet, providing a structural element that guides the reader through the poet's exploration of themes and ideas.
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