LOL. Just wouldn't want to let you get by with statements like 'the Roman church taught everyone in a language they understood.' It's neither honest, nor accurate -nor close to being either.
I did not claim the Patriarchate did not "teach" in a language understood by the people. Surely St. Patrick, Enlightener of Ireland preached and taught in his native Irish Celtic. But where are the Irish Celtic Masses, orders for Baptism, Ordination, Confirmation or Christmation, Unction, marriage rites, the tonsuring of monastics? Where are the Celtic Gospel Books, Books of the Apostles or Lectionaries?