sentences:  The eclipse of the moon, then, like the "sad augurs," refers to a sign that might presage the Last Judgment.While everything else (the "tombs of brass" for example)comes to an end, the "poor rhyme" will be the last thing to go.As in Sonnet 55, the power of the sonnet to give life to the young man -- or, here, to serve as a monument to him -- will only be overshadowed when that young man literally comes forth from the grave on Judgment Day.