Well, I managed to defeat not only another Lord of Hell, but he was all seven Lords of Hell combined into one as the Prime Evil. I stopped him and did what the angels could not do. I was almost ready to fight Imperius, the Archangel of Valor, because he kept threatening me and blaming me for Heaven's destruction. As if
I had planned to let Diablo enter Heaven and try to destroy it and all the angels.
I came out of the fight alive, though not unscathed. I'm a terrible patient, and I'm definitely not one to sit still like they tell me to. At least I'm out of the hospital now, though. It's a step in the right direction.