I don't currently have the reference to, but it was a particularly memorable one because it was so unique.

This guy tells the story of dying and meeting an angel who tells him he has to go back, has some important missions to finish on earth. He responds that he won't be able to anyway, his lungs are disease riddled and he is weak and sick, sorry. Might as well just leave now and stay dead. The angel brushes off his concerns and tells him something like "it is a simple matter to grow a pair of lungs in a man". The guy comes back, his lungs heal up, and so forth. Fascinating stuff to me.