July 20, 1054: Patriarch of Constantinople Michael Cerularius, having been excommunicated from the Roman church four Days earlier, excommunicates Pope Leo IX and his followers. This precipitates the Great Schism (see issue 54: Eastern Orthodoxy).
July 20, 1910: The Christian Endeavor Society of Missouri begins a campaign to ban all motion pictures that depicted kissing between nonrelatives.
December 7, 374: Ambrose is consecrated bishop of Milan, Italy. The first bishop to stand up to the emperor and win (thus creating a church-state precedent that would influence the West for a millennium), he was also an influential theologian, especially regarding the Holy Spirit. His preaching led to the conversion ofAugustine (see issue 15:Augustine and issue 67:Augustine).
December 7, 430: December 7, 430: Cyril of Alexandria condemns the Antiochene monk Nestorius, who claimed Christ was two persons ...