#FirstVaticanCouncil
The dogma of #PapalInfallibility was codified in 1870 on #ThisDayInHistory during the #FirstVaticanCouncil. It states that when the #Pope speaks #ExCathedra, as head of the #RomanCatholicChurch, he is preserved from error, regardless of his otherwise human fallibility sinfulness.
July 18, 2026 at 1:30 PM