5 Moreover, there will be important subjects for the assembled bishops to discuss. In these calamitous and trying times, We judge that above all efforts should be made to unite the hierarchy with Christian families to effect a more perfect union. Then the faithful may adhere to their bishops with all good will and reverence, and in a special manner may bravely profess their fidelity, obedience, and filial piety toward the bishop of the universal church. For, surely, to support the view that the Roman Pontiff should not be subject to any human power, but remain completely free, is the sacred obligation not of any one nation, but of the whole Catholic world. Therefore the bishops with united minds and efforts should see to it that the zeal of the faithful be aroused for this most just cause and that they urge its speedy accomplishment.
Source: In Ipso (Vatican.va)