Notes on The Epistle of St. Paul the Apostle to the Romans (Author Bishop Richard Challoner (ed.))
9:18 He hardeneth: Not by being the cause or author of his sin, but by withholding his grace, and so leaving him in his sin, in punishment of his past demerits.
Original Douay-Rheims from Project Gutenberg - Massive cleanup of OCR problems and editing done locally.