( CNN ) -- Evangelist Billy Graham was admitted to a hospital overnight for treatment of a pulmonary infection believed to be bronchitis , a North Carolina hospital and his evangelistic association said . `` Upon admission , he was alert and in good spirits , '' said the statement , which was released both by Mission Hospital in Asheville and the The Billy Graham Evangelistic Association . The 93-year-old also was hospitalized for pneumonia last November , six months after similarly being admitted to a hospital for the same condition . Since then , he has remained `` in good overall health ... though he continues to remain at home due to age-related conditions , '' according to the hospital and the association . The influential preacher went to the hospital for treatment for bronchitis and after developing a `` slight fever overnight , '' his spokesman A. Larry Ross said via Twitter . He is being treated with oral antibiotics and improving , at one point Sunday even sitting up in bed to remotely watch his grandson Will Graham give a guest sermon at First Baptist Church in Spartanburg , South Carolina , Ross later said . Graham , who Ross said had no fever by Sunday morning , ate lunch with daughter Gigi and one of his grandchildren at the hospital , where he had been chatting up the staff , said Ross . `` Doctors are encouraged by his progress , and he 's been alert all day ... taking meals ( and ) sitting up in bed , '' Ross said Sunday night . On Sunday , Graham was `` resting comfortably '' and in stable condition , Mission Hospital and the association said in their statement , citing pulmonologist David Pucci at the hospital . Physicians expect Graham to remain in the western North Carolina medical facility for `` a couple of days , '' according to Ross , who earlier noted that `` no date has been set for discharge . '' `` He 's made farther progress than for previous hospitalizations ( for pulmonary infections ) , '' Ross said , adding that Graham is `` in good hands '' and `` feels comfortable '' at Mission Hospital , where he has previously been treated . Graham , a resident of Montreat , about 18 miles east of Asheville , has provided counsel to generations of U.S. presidents beginning with Harry S. Truman and is the founder of the Billy Graham Evangelistic Association . The Charlotte native has preached to untold millions over six decades , beginning his missionary work in 1944 when he started speaking at rallies for the Youth for Christ Campus Life ministry . Five years later , Graham was holding crusades in tents in downtown Los Angeles . Originally scheduled for three weeks , the crusades drew so many followers they were extended to seven . His `` last crusade '' in June 2005 drew 230,000 people . Even with his advanced age and health issues , Graham remains `` actively involved in ministry and writing projects , '' his evangelistic association and the hospital said . That includes writing a new book , which is almost done , `` summarizing his Gospel message over the past seven decades of public ministry . '' He also has weighed in on hot-button issues of late , including supporting North Carolina 's constitutional amendment to ban gay marriage , which voters passed earlier this year , and last month defending the president of the Chick-fil-A restaurant chain for his opposition to same-sex marriage . Also in July , in a letter released by his organization , Graham leveled deep criticism at the United States . He compared the country to Sodom and Gomorrah , the biblical cities synonymous with sin . `` Self-centered indulgence , pride and a lack of shame over sin are now emblems of the American lifestyle , '' Graham wrote . CNN 's Greg Botelho contributed to this report .
NEW : Graham should be in the hospital for `` a couple of days , '' his spokesman says . The influential evangelist is believed to have bronchitis , an Asheville hospital says . He 's been alert and in good spirits , says the hospital and his evangelistic association . The 93-year-old has been in good overall health the past year , after getting pneumonia .