Post-Quantum Universe
What did the experience mean?

This experience was different in significant ways from the one that involved driving to play my college girlfriend a song that might comfort her.  

Back when I was a student, both of the opposing lines of reasoning going through my head could plausibly have been nothing more than my own thoughts.  But this time, it would never have occurred to me to just stand up in the middle of a church pew—especially without having any idea of what I might do next.   It’s just not the way I normally think.  (Or act.)
 
Also, Catholics (and I guess maybe other Christian denominations) believe that long-deceased saints can still perform miracles—like suddenly healing people of fatal diseases that are normally incurable.  If they can do this, just popping a couple of short instructions into somebody’s head ought not to be a particularly big deal.  

Given that these thoughts were nothing like my own typically are, what other external source would be more plausible than the saint with presumably superior powers who I was attempting to communicate with?

As for the message which had been conveyed, I was somewhat clueless at first.  But with the passage of a little time, I came to see there’s an interpretation that’s about as clear and simple as anyone could hope for.

Bear in mind the background story that Erlembaldo was about to enter a monastery at the time he was persuaded to lead the pataria.  If he had stuck to his original plan and gone into the monastery, then spent the rest of his life there (which appears to have been his intention), it’s unlikely that he could have done anywhere near as much good as he did by choosing to stay involved with the outside world.

I had been sitting in a church when I asked him to help me be more like him.  When someone with his background sends you promptly out of a sheltered religious enclave to a place where you can see a sizeable chunk of the broader world beyond it, what else could he be saying but “If you want to be like me, go out into that bigger world and find something worthwhile to do in it?”