The formal title is “Reverend” (Rev.) . You would use that in formal writing or to address them in public in a formal setting. If they are a member of a religious order of priests, it is customary to append the abbreviation of their religious order after their name. The formal title is “Reverend” (Rev.) .
Who is the leader of the Protestant Church?
Martin Luther, often called the father of Protestantism, fundamentally changed the Christian world through his force of will and new ideas. He tried passionately to reform the Catholic Church.