And what better way to prove it than by a public confession?
You can see the moment he suddenly decided to confess himself; it seems completely spontaneous. Again, all you can say is that this is a brilliant example of “preaching the Gospel” while saying nothing. How can you better show that the Bishop of Rome is just like you and me, a sinner in need of reconciliation with others and with God than seeking the sacrament yourself? How can you better encourage use of this sacrament than revealing yourself in need of it?
The knots that kept us from the essentials of faith are being untied. And yes, that music in the background is Allegri’s Miserere.