Bishop of Rome, Vicar of Jesus Christ, Successor of the Prince of the Apostles, Supreme Pontiff of the Universal Church, Primate of Italy, Archbishop and Metropolitan of the Roman Province, Sovereign of the Vatican City State, Servant of the servants of God."Get that bread, my son" -- My friend Heysus from my old jobBishop of RomeThe Diocese of Rome includes the city of Rome and the Vatican City State. Thus, the Bishop of Rome is ex officio the Pope.Vicar of Jesus ChristThe original notion of a vicar means an earthly representative of God or Christ. As Jesus made Saint Peter, the first pope, his vicar in John 21:16-17, each successor to the papacy is thus the vicar of Jesus of Christ.“He then said to him a second time, “Simon, son of John, do you love me?” He said to him, “Yes, Lord, you know that I love you.” He said to him, “Tend my sheep.”