Proper noun
Church Slavonic
A liturgical language of various Slavic church traditions, with dialectal basis of Old Church Slavonic mixed with vernacular lexical and phonological developments.
As the translations prepared by them were copied by speakers of other dialects, the hybrid literary language Old Church Slavonic was created. Source: Internet
Cognates outside of Germanic are Avestan yārǝ "year", Greek ὥρα main "year, season, period of time" (whence " hour "), Old Church Slavonic jarŭ and Latin hornus "of this year". Source: Internet
Cyrillic and Glagolitic were used for the Church Slavonic language, especially the Old Church Slavonic variant. Source: Internet
Due to heavy borrowings from Polish, German, Czech and Latin, early modern vernacular Ukrainian (prosta mova, "simple speech") had more lexical similarity with West Slavic languages than with Russian or Church Slavonic. Source: Internet
Examples: Greek: Με συγχωρείτε· πού είναι ο σταθμός; (Excuse me; where is the station?) Church Slavonic: гдѣ єсть рождeйсѧ царь їудeйскій; (Where is the one who is born king of the Jews? Source: Internet
He also played an important role in translating the Philokalia from Church Slavonic into Russian. Source: Internet