Decretum pontificum about the liturgical language (Nova Roma)
This decretum is currently active.
QVOD BONVM FAVSTVM FELIX FORTVNATVMQVE SIT POPVLO ROMANO QUIRITIBVS
The Collegium Pontificum hereby officially approves Latin as the official Liturgical Language of the Religio Romana within Nova Roma. We recommend that official rites be done in Latin whenever possible, and also be recorded in Latin for posterity.
We officially state that the adoption of Latin as official Liturgical language does not constitute disapproval of public or private rites being done in other world languages to facilitate ease and understandability. Citizens are free to use other languages in addition to or in place of Latin when necessary, even as we recognize Latin as the ancient Language which was used before the Gods, and therefore the most traditional language within the Religio Romana.