Persistence

I just got back from the ER, where I left my dad for an overnight stay. He's had a persistent infection for the past few weeks, and the antibiotic they gave him a few days ago, penicillin, didn't take. So the doctor decided to keep him overnight, to treat the infection with stronger antibiotics, and make sure he didn't have the antibiotic-resistant infection. He was in a lot of pain as he went in, but now that they've given him pain medication, he's doing a lot better, and remains concerned mostly for his dog's physical and emotional well-being. Please be fighting persistence with a stronger form of steadfastness, and pray that this infection would not prove to be of the worst variety, and that he would quickly return to full physical health.