Charlotte-based evangelist Billy Graham, 96 is very weak but his son Franklin revealed that his father's mind is clear.

"He's 96 years of age so he doesn't have a lot of stamina and he doesn't carry on long conversations, but his mind is still clear and we're thankful for that," Franklin said in an NBC interview.

The man who founded the Billy Graham Evangelistic Association was said to have talked about preaching in Wisconsin recently, after the family watched a football game between the Green Bay Packers and the Dallas Cowboys.

"One of the nurses beside him, she said 'Dr. Graham did you ever preach there'? He said, 'oh yes' and we talked a little bit about that," said Franklin.

He added that he is grateful that God is still maintaining Billy's health and he is in awe that "he's still with us at 96 years of age."

Meanwhile his daughter Anne Graham Lotz told Premier that her father never lost his focus, and that is because he is a genuine, authentic man of God. "He has not yet lost focus on the gospel and reaching people for Christ," she said. "My father is a very humble man, and I think that comes from his walk with God."

She also lauded her mother's spirituality that made her want to know God. And Anne knew that her mother's spirituality was also inspired by Billy.

Billy was hospitalized after his 95th birthday celebration, and had to undergo observation and lung tests in November 2013. His health has deteriorated since then. Last year, Franklin reported that his father is "doing ok, just ok." He added that his father is ready to go anytime but he expressed desire to keep his father a little longer.

"My father is ready to go to Heaven and whenever that day comes, he's ready," he said. "He's worked hard all of his life and faithful to preaching the gospel of Jesus Christ his entire life. And so he's ready to go home and I'm praying that the Lord will leave him a little longer. We need him."

Franklin further praised Billy as "a great father" and "a great friend," and shared how much he enjoys having lunch with his father every Sunday.

"I have my own personal reason for wanting him to stay around a long time," he admitted. "He can be this way for many months but he can also get his strength back and that's what I'm praying because we still have some work for him to do."