How is not erring in matters of faith or morals equivalent or identical to enjoying personal perfection? They seem very different to me, as different as the clear water and the rusty and cracked conduit which brings it to me.
Now, now, it's far easier to attack the reprehensible personal natures of a small group of popes than it is to find any error taught. The irony is that the corrupt popes typically didn't teach ANYTHING because they weren't really concerned with such matters.
Some find it difficult to differentiate what a pope TAUGHT with what he actually did in his personal life.
Perhaps this illustration will make it easier:
Jimmy Swaggart certainly taught that it was sinful to go to prostitutes and commit adultery. The fact that he was later caught frequenting prostitutes and committing adultery DOES NOT make what he taught any less valid.
So when one pope sells the position to someone else, God will honor that person, whether a Christian or not and make him a conduit, eh???
That philosophy doesn't float with the scriptures...But I guess it looks good on paper to a Catholic...
And BTW, God promised perfect teaching...He did not guarantee perfect following...Paul rebuked your 'first pope' because he veered off the path of this perfect knowledge...