 For the next 22 years, he worked with Cyril and Methodius and other missionaries in translating the Bible into Old Church Slavonic and promoted it in Great Moravia and Principality of Lower Pannonia.In 867 or 868 he became a priest in Rome, ordained along with two other disciples of Cyril and Methodius, Saint Gorazd and Saint Clement of Ohrid, by bishops Formosus and Gauderic.For the purpose of the mission to Moravia, the missionaries devised the Glagolitic alphabet, the first alphabet to match the specific features of the Slavic language.