I'm guessing the same story was told 600 years ago in Spain:
"My father, an Inquisitor himself, told me of the time when the Grand Inquisitor promoted him. Ordinary priests are a dime a dozen, the great man said, but it takes special skill to be an Inquisitor. And that's why you never let them go back to the pulpit when you do find a good one."
It’s a joke on the original anecdote’s timeless formula of double-filtered appeal to patriarchal authority (the father relaying the wisdom of the boss to the son).
"My father, an Inquisitor himself, told me of the time when the Grand Inquisitor promoted him. Ordinary priests are a dime a dozen, the great man said, but it takes special skill to be an Inquisitor. And that's why you never let them go back to the pulpit when you do find a good one."