When pressed further, Bentley provided the name of a woman in California who had a large tumor in her uterus that shrank after she saw Bentley.
Her husband, however, told "Nightline" that it could be a coincidence because she was still undergoing medical treatment. He said she was too tired to talk to us at the time but added that she was regaining her strength day by day.
The husband did provide some of his wife's medical records from a clinic in Tijuana, Mexico, where she went for cancer treatment after being turned away by American hospitals. They, however, insisted on obscuring the clinic's name and the names of the doctors.
Not a single claim of Bentley's healing powers could be independently verified.
Bentley, however, remains positive.
"I believe God is real and he's showing himself to his people," he said. "Yes, I believe the prayer of faith will save the sick."
Bentley's revival is filled with wheelchairs and crutches, with people of faith and people desperate for salvation through faith.
One of them is Bill Wise. He patiently tended his desperately ill baby daughter throughout the long night's revival. He listened for a call from Bentley offering a cure for his child's condition. But it never came.
Yet Wise defiantly refuses to lose faith.
"Even if we don't see any change, in the immediate run here, sometimes prayer is cumulative," Wise said.
This piece has been updated with a clarification that was necessary because of an editing error.