Editing and Proofreading I believe. Hope this helps :)))))))
The best summary of this monologue is:
Antony sends his servant to respectfully tell Brutus that Antony loves and honors him, as he did Caesar. Then the servant says that if Antony can safely come and inquire about Caesar’s death, then Antony will be loyal to Brutus.
As it is summarized, Antony wanted to tell Brutus how magnanimous, wise, brave, and honorable he was to him, and used his servant as a messenger to do so. He also claimed the same thoughts or feelings regarding Caesar. In this way, he promises faithfulness to Brutus given that it will be safe for him to pay Brutus a visit in order to hear the story of why he commited such murder.
The black sac symbolizes being hidden. He is trying to say that he and his feelings are being squished into something small to stay hidden. He doesn't want to be hidden but it is being forced. It's says that its deep which probably means that he has deep pain the people don't want to know about.
Hope this is helpful. if not lmk :)
Having honor and being trustworthy