When I was in mania, many of my loved ones were extremely worried about me. I was still articulate but the things I said were out of the norm. I focused heavily on spirituality and drawing larger connections between science, mathematics, and the universe, without a complete understanding of these connections at all.
My family spent many years trying to get me help, but I felt like they were against me because they did not seem to see that my state was a part of me; it was just unstable and unknown to anyone but me. Because I did not feel heard by my loved ones, I ended up convincing myself that the closest people to me were trying to take away my sense of freedom, autonomy, and confidence that accompanied my psychotic state. I would ask doctors not to call them, which made it harder for doctors to really understand who I am at baseline and what was wrong (since I was fairly articulate despite the bizarre thinking and social behavior).
For some people, delusions of deliberate persecution have roots of truth in them, even though, overall, the people closest to you just want to get one of their favorite people back to a healthy, familiar, and functional state. When I finally regained my sense of self, I learned that none of my family and friends wanted to harm me at all, but they did want to have control, to some extent, because I was partially a danger to myself due my impulsivity and unpredictable choices.
For those trying to help their loved one overcome the hardships of psychosis, I strongly suggest asking questions instead of trying to assert what you see as truth. Asking questions allows the person to reflect on why they believe what they do, and it will help them work towards disproving their delusions themselves and will also make them feel heard, seen, and validated rather than discredited and rejected by those they love who don't seem to understand what they're going through.