Timeline Monday 18 July 1870

Events on Monday 18 July 1870 1

• 1870 First Vatican Council Declares Papal Infallibility Catholic dogma affirms the pope's teaching authority The First Vatican Council approved the dogma of papal infallibility on 18 July 1870, holding that the pope cannot err when defining doctrine on faith or morals in his official capacity as head of the Church. The council was suspended weeks later when Italian troops captured Rome. It marked a defining moment in modern Catholic doctrine.