Fourth Book of Kings (Author Compiled by Isaias and Jeremias from records of Nathan, Gad, Addo, Ahias, Jehu and others.)
Chapter 19
3qui dixerunt haec dicit Ezechias dies tribulationis et increpationis et blasphemiae dies iste venerunt filii usque ad partum et vires non habet parturiens
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.