How many years have you studied biblical history?  I studied in Jerusalem under biblical scholars in preparation for my advanced studies in Catholic Church History---which now I teach. What language did the common Jew speak in Palestine?  What language did the simple fishermen who followed Jesus use in celebrating the greatest feast in the Jewish calendar?  It was not Latin---which was a language of subjection for the Palestinian Jew.  

If you think that Church historians don't know what languages Christian people used in their celebrations of the Meal---you're full of hooey!  The beginnings of the different Rites of the Church were in seed in these centuries. 

Oh, and the Roman Emperors didn't persecute Christians?  And Diocletian and Nero permitted the building of churches?  Christians were persecuted either wholesale or in regions by the Roman emperors until the Edict of Milan in 311 AD.  By CHURCH---I mean buildings that we call churches.  Communities existed before.