And Jesus quoted scripture in Greek, Hebrew, and Aramaic as was appropriate to the situation.  By Christ's time Hebrew was for most people only a sacral language.

To the best of our understanding the Mass was said in sacral registers of the either the vernacular or more commonly such registers of the lingua franca, developing very quickly into a sacral language.

Greek with Hebrew and Aramaic terms mixed in, then later Latin with Greek, Hebrew, and Aramaic.  This isn't a purely Western phenomenon either; witness the development of Aramaic or old common Slavonic into sacral languages.

Inculturated for us, the sacral language is Church Latin, the sacral language for us in the West from the 6th century to approximately yesterday.  Unless we're of deep Protestant heritage (and most US Catholics are not...) where it is prayer-book English, which is what the Ordinariate uses. To dispense altogether with sacral language, replacing it with nothing, has scarce precedent in Christian history.