We declare, assert, define and pronounce to be subject to the Roman Pontiff is to every creature altogether necessary for salvation… I have the authority of the King of Kings. I am all in all, and above all, so that God Himself and I, the Vicar of Christ, have but one consistory, and I am able to do almost all that God can do. What therefore, can you make of me but God?
Pope Boniface VIIIIf, therefore, the Greeks or others say that they are not committed to Peter and to his successors, they necessarily say that they are not of the sheep of Christ, since the Lord says that there is only one fold and one shepherd (Jn.10:16). Whoever, therefore, resists this authority, resists the command of God Himself.
Pope Boniface VIII