@Ash_Kvetchum @MK2boogaloo @Omega_Variant @Xenophon @blankdeblank @BowsacNoodle @Frondeur @Will2Power @givenup The Pope had authority before Justinian. It's in the councils and the writings of Pope St. Leo I.

Arguably even earlier, as the Pope had seen fit to excommunicate the entire East over the Easter controversy, which while not canonically impossible, would not have been something that any other See would have seen fit to do.

Better schizo poasting than the other two, though.