I have friends who’ve received partial healing but still struggle with painful aspects of their disease. Other friends have been healed of an addiction but still struggle with feelings of inadequacy and self-loathing. And I wonder, Why doesn’t God heal them completely—once and for all?

In Mark 8:22–26, we read the story of Jesus healing a man born blind. Jesus first took the man away from the village. Then He spit on the man’s eyes and “put his hands on him.” The man said he now saw people who looked “like trees walking around.” Then Jesus touched the man’s eyes again,…