You said: It is not obvious to us that Catholicism teaches this, however.
If one can’t see that the Catholic Church teaches this then one certainly couldn’t claim anyone else does....unless one assigns to themselves some special gift that nobody else has. Because the evidence of protestantism is that 1. There are many truths/ways or 2. Only one person or one small group of persons possess the truth.
I base that on the fact that there are a never-ending number of different protestant interpretations of “Gospel Truth” to choose from.
Just as Jesus rebuked the deceiver who pointed to “a” way, I believe He would rebuke the “Bible Only” crowd for the same thing.
Ultimately that is why He left us a Church and not a book.
“Because the evidence of protestantism is that 1. There are many truths/ways or 2. Only one person or one small group of persons possess the truth.”