Make sure your essay is easy to read and understand. If you are writing an essay you want to make sure you use the correct wording and correct grammar. You do not want to word everything in a way somebody can understand it. For example if you were going to write an essay on double digit multiplication. You do NOT want to say multiply the two, instead explain how to multiply the two and what it means to multiply them. I hope I helped :) if not then sorry!
It would be Odysseus is revealing himself to Eumaeus and Philoetius before the massacre to get their support. He does this because they are the only ones who know about this scar and he wants them to know it is him.