Hinn said he'd like to cut his salary to zero.
"Let me just tell you this, my aim in life is to preach the gospel of Jesus Christ, that's all I care about," said Hinn. "And if somebody comes along, or if there's a way where I can be completely taken care of financially, I won't let the ministry pay me a cent. I'll make you a deal. Right here on camera. Let 'em all see me do this with you. If somebody comes along and says, 'OK Benny Hinn, I'm gonna help you financially so you can pay your own bills,' or if I can do it on my own and get a job and do something on the side like I'm doing now, it would be a pleasure."
"Nightline" asked Hinn whether he ever had moments, when people are writing out checks to him or filling out cards with their credit card information, that he thinks the people can't afford it, they're doing it because they're desperate and that he shouldn't take this money.
"If I was fake I would absolutely give them back their money," said Hinn, "but I believe that God called me to preach the gospel which is very important."
Grassley's office said that Hinn has cooperated fully with the investigation into whether Hinn and other televangelist are using the tax-free donations they collect appropriately. The senator has not yet released the results of his investigation.
"The senator himself says we gave them more information than he thought we would," said Hinn. But when "Nightline" asked for the same information, Hinn said the ministry could not turn it over because "we have an agreement with the senator to keep things confidential." After the interview, Grassley's office told ABC News that Hinn is free to release any information he wants. But the ministry said it didn't have time to edit out personal information from its donors in time for "Nightline"'s broadcast. And therefore the ministry turned over nothing.
But Hinn said he was glad to get the chance to answer his skeptics.
"The questions [you] asked me, I've wanted someone to ask me for the last 20 years of my life," Hinn told me. "I think what this man did is fantastic and thank you for doing it. No, really, I'm very pleased. ... because it's time for me to tell it all. I don't want people talking for me. I want to talk for myself."