Original sentence: " After the completion of his education Cyril took orders, and seems to have held the important position of chartophylax, or secretary to the patriarch and keeper of the  archives, with some judicial functions also.Besides the Greek tongue of his society, he was fluent in Latin, Arabic, Hebrew; his skills with Slavonic may have been native, for his mother spoke the language of the local Slavs and, according to the Vita, Byzantine Emperor Michael III stated that "all Thessalonians speak perfect Slavonic.Saint Cyril, Greek: Αγιος Κύριλλος, South Slavic languages: Sveti Kiril, Свети Кирил or Свети Ћирило (born in 827, Thessaloniki, Byzantine Empire (today Greece); died February 4, 869, Rome) was a Byzantine monk, scholar, theologian, and linguist.They convinced many of the ecclesiastical authorities of their time to permit translation of the liturgy and Gospels into Old Church Slavonic.With his brother Methodius he is believed to have invented the Glagolitic alphabet, an alphabet used for Slavonic manuscripts before the development of the Cyrillic alphabet
Edited sentence: After the completion of his education Cyril took orders, and seems to have held the important position of chartophylax, or secretary to the patriarch and keeper of the  archives, with some judicial functions also.Alongside his brother Methodius he is believed to have invented the Glagolitic alphabet, an alphabet used for Slavonic manuscripts before the development of the Cyrillic alphabet.He was fluent in Greek, Slavonic, Latin, Arabic and Hebrew.Saint Cyril, Greek: Αγιος Κύριλλος, South Slavonic: Sveti Kiril, Свети Кирил, Свети Ћирило (born in 827, Thessaloniki, Byzantine Empire (today Greece); died February 4, 869, Rome) was a Byzantine missionary, monk, scholar, theologist, and linguist.They convinced many of the ecclesiastical authorities of their time to permit translation of the liturgy and Gospels into vernacular languages such as Old Church Slavonic