Understanding the Weird Timeline of Ineffabilis Deus

5 minutes By Clara Gerdes, Yale University On December 8, 1854, Pope Pius IX pronounced Mary’s Immaculate Conception to be dogma. That Mary’s soul was freed from original sin by Christ in advance of her conception—something which Catholics already held to be true—was now a firm and indisputable article of faith for the universal Church, enshrined in […]