The second quartrain of the poetry 'I find no peace' presents in the first line an alliteration of the sound 'eth' that in this case corresponds to the sound 's' of the present simple of the third person singular.
It's repeated also in the second, in the third and in the fifth quartrain, and it underlines that now the subject is not the speaking voice but the effect for his love, his suffering. Indeed in this stanza the poet undergoes the action, therefore passive. You can see this through the personal pronouns 'me', repeated in the stanza three times. The last line is very important. The reader see that the subject and the verb are in the centre of the line, and that the affirmation 'none occasion' is building by the negation 'none' that is stronger than 'any'. So this underlines that the speaking voice has not any occasion.