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|year=1983}}</ref><ref name=fortson>Benjamin W. Fortson. ''Indo-European Language and Culture: An Introduction'', p. 374</ref>, was the first literary Slavic language, based on the Slavic dialects of the [[Thessaloniki|Thessalonica]] region by the 9th century Byzantine Greek<ref>Dmitrij Cizevskij. ''Comparative History of Slavic Literatures'', Vanderbilt University Press (2000) p. 27</ref> missionaries, [[Cyril and Methodius|Ss Cyril and Methodius]], who used it for translation of the [[Bible]] and other Ancient Greek ecclesiastical texts, and for some of their own writings. It played a great role in the history of Slavic languages and served as a basis and a role-model for later Church Slavonic traditions, where Church Slavonic is used as a [[liturgical language]] to this day by some Orthodox and Greek-Catholic Churches of the Slavic peoples.