The apostle Paul.
Paul had something concrete to preach, not just a continuing scattershot critique of believers outside his authority.
What do you call a person who is preoccupied with someone else’s faith ?
Paul was Evangelizing and his target audience were Gentiles, who were PAGAN.
Whereas SOME protestants on FR never get off the subject of Catholics, which is why I say:
Catholics live rent free in the heads of protestants.
Maybe someone uninvolved can explain it.
AMDG