Cyril and Methodius - known as the Slavic missionaries who, in 863 arrived from Greece to Moravia. Created Slavic Glagolitic script font, in which also translated the New Testament and introduced worship in a language understood by the Slavs.

The brothers came from Thessaloniki. Younger Constantine (Cyril) was a philosopher in Constantinople Methodius, originally called Michal worked as a civil servant. Both, however, later withdrew from public life, he entered the monastery and became a monk. The missionary activities are already familiar with the way to the Crimea, where they had to renew relations with the Khazars.

Great Moravia brothers went to the invitation by the Great Moravian Prince Rostislav facing the Byzantine Emperor Michael III. Rostislav had an interest in ensuring that in the realm of Christianity took hold, but did not want to come under the influence of the Franks, whose priests had worked in Moravia.

Cyril and Methodius were the gospel very successful because, unlike the Frankish clergy preached in the language of the Slavs. Created the Glagolitic script font, which translated into a substantial part of the New Testament. In 867 missionaries went to Rome and Pope Hadrian II. achieve the promise that will be recognized as Old Slavonic liturgical language of the other. Two years later, Constantine died and he returned to Moravia only Methodius, who was to become Archbishop of Pannonia. However, the area was also entitled Archbishop of Salzburg and thus had Methodius arrested. He was released to freedom after more than two years after the intervention of Pope John VIII. Head of the Church also confirmed Methodius in office as well as the introduction of Slavonic liturgical language.

The older of the two Slavic Apostles died April 6 884. Before that but he has educated many followers, but who had to leave the country by force. Methodius longtime rival German bishop Wiching because the pope by intrigue and gossip reached ban Slavonic liturgy. Cyril and Methodius are the main patrons of Moravia and spolupatrony Europe. Czech calendar brothers reminds July 5, this day is also recognized as a national holiday.