The term "Vicar of Christ" refers to the Pope, who is believed to be the earthly representative of Jesus Christ. There are various synonyms for this term that are used in different contexts. "Bishop of Rome" and "Holy Father" are the most common synonyms for the Pope. "Successor of Peter" and "Supreme Pontiff" are other synonyms used to refer to the Pope. The title "Servant of the servants of God" refers to the Pope's role as a servant leader in the Church. The title "Papa" is also used by members of the Catholic Church to refer to the Pope. Regardless of the synonym used, the Pope is recognized as the spiritual leader of the Catholic Church and revered by millions of Christians around the world.