73 That there is unity in the administration of the Catholic Church is evident. For as the faithful are subject to their priests, so are priests to their bishops, whom "the Holy Spirit has placed......to rule the Church of God."(26) So, too, every bishop is subject to the Roman pontiff, the successor of Saint Peter, whom Christ called a rock and made the foundation of His Church.(27) It was to Peter that Christ gave in a special way the power to bind and loose on earth,(28) to strengthen his brethren,(29) to feed the entire flock.(30)
Source: Ad Petri Cathedram (Vatican.va)