Now that's funny coming from a Catholic whose church is self-authenticating.
The Catholic church is infallible because she speaks infallibly when declaring her infallibility.
Or she's infallible according to the Scripture the Catholic church claims responsibility for writing.
Or some such nonsense.
Talk about self-authenticating.....
And you're betting your salvation on THAT?
Or according to the only interpretation of Scripture that has any authority, that being that which is from God, as she as infallibly decreed she is infallible when universally declaring such things as that she is the one true and infallible church.
However, Scripture is established as being wholly from God due to its Divine attestation and unique and enduring Heavenly qualities, in contrast to man, and to Rome, which has often manifested qualities of Hell.