Adam Clarke on Matthew 26:73

Thy speech - Thy manner of speech, η λαλια σου, that dialect of thine - his accent being different from that of Jerusalem. From various examples given by Lightfoot and Schoettgen, we find that the Galileans had a very corrupt pronunciation, frequently interchanging ת ה א and ע, and so blending or dividing words as to render them unintelligible, or cause them to convey a contrary sense.

Bewrayeth thee - Δηλου σε ποιει, maketh thee manifest, from the Anglo-saxon, to accuse, betray; a word long since lost from our language.