I inferred you're referring to the story "Sweetest Love, I Do Not Goe" by John Donne
Answer:
<u>The speaker wants to go away from his beloved as a "test run" for the separation they will experience at death. </u>
<u>Explanation:</u>
In this story piece, it is strongly believed that the speaker goes away in other to experience what was to come– their death.
Remember also, that they will not die at the same time, so test running their separation now would prepare them for a time when one of them will be left alive and alone.
ALMA DEUSTCHER BEGAN PLAYING THE PIANO
The sentence that best paraphrases the first sentence of the excerpt is "You aren't telling me anything I don't know". This is because the narrator uses the metaphor of "rousing me from a deep sleep" as saying that he was aware of the situation that was going on, it wasn't that he didn't know about it.