2 Kings (Author Compiled by Isaiah and Jeremiah from records of Nathan, Gad, Iddo, Ahijah, Jehu and others.)
18:19And Rabshakeh said unto them, Speak ye now to Hezekiah, Thus saith the great king, the king of Assyria, What confidence is this wherein thou trustest?
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.