2 Kings (Author Compiled by Isaiah and Jeremiah from records of Nathan, Gad, Iddo, Ahijah, Jehu and others.)
19:6And Isaiah said to them, Thus shall ye say to your master: Thus saith Jehovah: Be not afraid of the words that thou hast heard, wherewith the servants of the king of Assyria have blasphemed me.
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.