Even during the time of Trent the Mass of the day was celebrated in other languages. In Bosnia and Dalmatia it was celebrated in Slavonic. In Calabria and Sicily it was celebrated in Greek. In Bohemia it was celebrated in Czech. All of these were by papal dispensation. (This is found in the book
What About The Latin Mass? by Kevin Orlin Johnson, Ph.D., on page 3.)
Indeed. As testimony to it, we have the
Missale Romanum Glagolitice, the Roman Missal in Glagolitic script printed in 1483, making it the first printed Croatian book and the first printed book in Europe not in the Latin alphabet. Also the late 15th century
Hrvoje’s Missal, also from Croatia (ancient Dalmatia).
Remember what Pope John VIII (reigned 872-82) wrote concerning Sts. Cyril and Methodius?
We rightly praise the Slavonic letters invented by Cyril in which praises to God are set forth, and we order that the glories and deeds of Christ our Lord be told in that same language.
Nor is it in any wise opposed to wholesome doctrine and faith to say Mass in that same Slavonic language (
Nec sanæ fidei vel doctrinæ aliquid obstat missam in eadem slavonica lingua canere)
, or to chant the holy gospels or divine lessons from the Old and New Testaments duly translated and interpreted therein, or the other parts of the divine office: for He who created the three principal languages, Hebrew, Greek, and Latin, also made the others for His praise and glory.
The
OCE notes as well:
The Roman Mass was translated into this Slavonic shortly after the Greek liturgy had been translated by Sts. Cyril and Methodius, so that in the course of time among the Slavic peoples the southern Slavonic written in Glagolitic letters became the language of the Roman Rite, while the northern Slavonic written in Cyrillic letters was the language of the Greek Rite. The prevailing use of the Latin language and the adoption of the Roman alphabet by many Slavic nationalities caused the use of the Glagolitic to diminish and Latin to gradually take its place. The northern Slavic peoples, like the Bohemians, Poles and Slovaks, who were converted by Latin missionaries, used the Latin in their rite from the very first. At present the Glagolitic is only used in Dalmatia and Croatia. Urban VIII in 1631 definitively settled the use of the Glagolitic-Slavonic missal and office-books in the Roman Rite, and laid down rules where the clergy of each language came in contact with each other in regard to church services. Leo XIII published two editions of the Glagoltic Missal, from one of which the illustration on page 45 is taken.
The liturgy used in the Slavonic language, whether of Greek or Roman Rite, offers no peculiarities differing from the original Greek or Latin sources. The Ruthenians have introduced an occasional minor modification (see RUTHENIAN RITE), but the Orthodox Russians, Bulgarians, and Servians substantially follow he Byzantine liturgy and offices in the Slavonic version. The Glagolitic Missal, Breviary, and ritual follow closely the Roman liturgical books, and the latest editions contain the new offices authorized by the Roman congregations. The casual observer could not distinguish the Slavonic priest from the Latin priest when celebrating Mass or other services, except by hearing the language as pronounced aloud.