In other words, the Catholic religion deemed the Catholic religion infallible...
There’s something a little odd about that picture there...
There are some similarities in the structure of RC church progression of tradition and Shia Islam.
http://uncpress.unc.edu/books/T-6623.html
One word answer: Christ
to Peter-His Church- ONE Catholic and Apostolic Church
(not Churches, not 35,000 Jeremish Wrights, Luthers, Calvins, Wesleys, Sharptons, Billy Grahams, Mormons, Jehovah’s Witnesses, etc)