Saint Peter has arrived from heaven into this poem to express perhaps for the first time the envy and the anger that Milton seems successfully to have suppressed up to this point: envy and anger not only at the state of the Church of England in the late 1630s but also the state of poetry in England at this time.So Saint Peter concludes with -- it goes on, and he concludes with a couplet that is as terrifying in its threat of finality as it is for me utterly baffling in its significance. 