Billy Graham Billy Graham

Billy Graham was hospitalized Wednesday with pneumonia, but is "responding well" to treatment, according to his rep.

"Based on test results, doctors for Billy Graham confirm diagnosis of pneumonia, but are encouraged he is responding well to antibiotics," Graham's rep, A. Larry Ross, tweeted on Thursday. Graham's pulmonologist, Dr. Mark Hellreich, also released a statement that was posted on Graham's website Thursday saying that the 93-year-old evangelical is "in stable condition."

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On Wednesday, Ross tweeted that Graham had been admitted to Mission Hospital in Asheville, N.C., for treatment for his lungs. According to Ross, Graham was "alert" and smiling and waving at the hospital staff upon his entrance.

No date has been set for his discharge, but according to his website, "Mr. Graham is looking forward to returning home to spend the upcoming Christmas holiday with his family."

Graham, who rose to fame in the '40s when his sermons were broadcast on the radio and television, has spent time with 12 sitting U.S. Presidents going as far back as Harry S. Truman.