: Their use of the vernacular for liturgy faced fierce resistance from German clergy, who argued for the "trilingual" supremacy of Hebrew, Greek, and Latin.
Saints and Methodius (815–885) , celebrated as the " Apostles to the Slavs ," were 9th-century Byzantine brothers and theologians whose mission transformed the religious, linguistic, and cultural landscape of Eastern Europe. The Mission to Great Moravia
: The brothers, originally from Thessalonica , were fluent in Slavic dialects and arrived in Moravia in 863 . Cyril and Methodius: The Apostles of the Slavs(...
: Celebrated on February 14 in many traditions and July 5 in the Roman Catholic Church.
: To resolve these conflicts, they traveled to Rome . In 868, Pope Adrian II officially authorized the use of the Slavic liturgy. Linguistic Revolution: The Alphabets : Their use of the vernacular for liturgy
: They are venerated as "Equal-to-Apostles" in the Eastern Orthodox Church and as saints in the Roman Catholic Church.
: Invented by Cyril around 863, this was the first script designed specifically for the phonetic system of the Slavic tongue. : Celebrated on February 14 in many traditions
: Often attributed to their disciples (such as Clement of Ohrid ) in the late 9th century, it was based on Greek uncial script and eventually replaced Glagolitic across most of the Slavic world.