Sentence:  He spoke either Latin or Welsh; and the Sicambri spoke the antient Teutonic. Remi, in all appearance, renewed the miracle of the <WSD>Pentecost</WSD>: "Et unusquisquis intendebat linguam suam", And each understood his own language. 
Meaning of the word marked with <WSD> tags:  the particular (Jewish) Pentecost 49 days (inclusive) after the resurrection of Jesus on the (Jewish) Day of First Fruits, when (in Christian teaching) the Holy Spirit descended upon the Apostles with miraculous effects including the ability to explain the Gospel intelligibly in languages they did not know; or a similar occasion since