Brothers born in Thessaloniki, to famous and wealthy parents, Leo and Maria. The elder brother Methodius spent ten years as an officer among the Slavs (Macedonians) and thus learned the Slavic language. After that, Methodius retired to Mount Olympus and devoted himself to monastic asceticism. Cyril (Constantine) later joined him there. But when the Khazar emperor Kagan asked Emperor Michael for preachers of the Christian faith, then, by order of the emperor, these two brothers were found and sent among the Khazars. Having convinced the Kagan of the Christian faith, they baptized him with a large number of his chiefs and an even larger number of people. After a certain time, they returned to Constantinople, where they composed the Slavic alphabet of thirty-eight letters, and began to translate church books from Greek into Slavic. At the invitation of Prince Rastislav, they went to Moravia, where they spread and strengthened the pious faith, and multiplied books and gave them to priests to teach the youth. At the invitation of the Pope, they went to Rome, where Cyril fell ill and died on February 14, 869. Then Methodius returned to Moravia and worked until his death to strengthen the faith of Christ among the Slavs. After his death - and he reposed in the Lord on April 6, 885 - his disciples, the five-member group, with Saint Clement as their bishop at their head, crossed the Danube and descended south, to Macedonia, where, from Ohrid, they continued the work among the Slavs, begun by Cyril and Methodius in the north.

Hieromartyr Mocia. Saint Nicodemus, Archbishop of Serbia.