9 Let there be no question of fostering under this name of Christian Democracy any intention of diminishing the spirit of obedience, or of withdrawing people from their lawful rulers. Both the natural and the Christian law command us to revere those who in their various grades are shown above us in the State, and to submit ourselves to their just commands. It is quite in keeping with our dignity as men and Christians to obey, not only exteriorly, but from the heart, as the Apostle expresses it, "for conscience' sake," when he commands us to keep our soul subject to the higher powers.(3) It is abhorrent to the profession of Christianity that any one should feel unwilling to be subject and obedient to those who rule in the Church, and first of all to the bishops whom (without prejudice to the universal power of the Roman Pontiff) "the Holy Spirit has placed to rule the Church of God which Christ has purchased by His Blood."(4) He who thinks or acts otherwise is guilty of ignoring the grave precept of the Apostle who bids us to obey our rulers and to be subject to them, for they watch as having to give an account of our souls.(5) Let the faithful everywhere implant these principles deep in their souls, and put them in practice in their daily life, and let the ministers of the Gospel meditate them profoundly, and incessantly labor, not merely by exhortation but especially by example, to teach them to others.
Source: Graves de Communi Re (Vatican.va)