Fourth Book of Kings (Author Compiled by Isaias and Jeremias from records of Nathan, Gad, Addo, Ahias, Jehu and others.)
Chapter 20
3obsecro Domine memento quomodo ambulaverim coram te in veritate et in corde perfecto et quod placitum est coram te fecerim flevit itaque Ezechias fletu magno
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.