There is one fold and one shepherd.

We declare, say , define, and pronounce that it is absolutely necessary for the salvation of every human creature to be subject to the Roman Pontiff.

Anything done for another is done for oneself.

If, 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.

There is one fold and one shepherd.

It is necessary to salvation that all Christians be subject to the pope.

There is no more harm in adultery than in rubbing one's hands together.