how does one deal with or empathize with a brother who insults and blames you for doing and saying things I did not even do or say.
When he's insulting or blaming you, one trick is to look for the hidden meaning, or what other thing might be going on that is making him fearful or upset. My pwBPD is not a sibling, but my mother. One of the earliest things I learned on this site was don't JADE (justify, argue, defend or explain), even though those are the skills most of the world uses in rational conversations or debates (also when we learn how to write school essays). JADEing just triggers the BPD and escalates the problem. Stay away from doing it. The better tool to use is SET (support, empathy, truth). This is NOT the same thing as agreeing with the nonsense the person is saying. Instead it just validates their feelings, which de-escalates the conflict.