Rabshakeh: He was the chief speaker, being a very eloquent man, and, according to the Hebrews, whom Procopius follows, an apostate Jew; which is not improbable, as he spoke Hebrew so fluently; and when he blasphemed the Divine Majesty, the king and nobles rent their clothes, which was usual unless the blasphemer were an Israelite.
Thus saith: 2 Chronicles 32:10; Isaiah 10:8-14, Isaiah 36:4, Isaiah 37:13; Daniel 4:30