Fourth Book of Kings (Author Compiled by Isaias and Jeremias from records of Nathan, Gad, Addo, Ahias, Jehu and others.)
Chapter 19
6dixitque eis Esaias haec dicetis domino vestro haec dicit Dominus noli timere a facie sermonum quos audisti quibus blasphemaverunt pueri regis Assyriorum me
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.