FILE - Former President Jimmy Carter teaches Sunday school class at Maranatha Baptist Church in his hometown, Aug. 23, 2015, in Plains, Ga. The 90-year-old Carter gave one lesson to about 300 people filling the small Baptist church that he and his wife, Rosalynn, attend. It was Carter's first lesson since detailing the intravenous drug doses and radiation treatment planned to treat melanoma found in his brain after surgery to remove a tumor from his liver. (AP Photo/David Goldman, File)

FILE - Former President Jimmy Carter prays during Sunday school class at Maranatha Baptist Church in his hometown, Dec. 13, 2015, in Plains, Ga. (AP Photo/Branden Camp, File)

FILE - Former President Jimmy Carter opens up a Bible while teaching Sunday school class at Maranatha Baptist Church in his hometown, Aug. 23, 2015, in Plains, Ga. (AP Photo/David Goldman, File)

FILE - Former President Jimmy Carter welcomes visitors to Maranatha Baptist Church before teaching Sunday school in Plains, Ga., June 8, 2014. (AP Photo/John Bazemore, File)

People line up to take a picture with Jimmy Carter after his final Sunday school class on Nov. 3, 2019, at the Maranatha Baptist Church in Plains, Ga. (AP Photo/Paul Newberry)

This photo provided by AP reporter Paul Newberry shows Newberry, his wife Linda and son Hudson with Rosalynn and Jimmy Carter in the Maranatha Baptist Church in Plains, Ga., March 27, 2016. (Paul Newberry via AP)

FILE - People wait in line outside Maranatha Baptist Church in Plains, Ga., to get into a Sunday school class taught by former U.S. President Jimmy Carter on Aug. 23, 2015. It was Carter's first lesson since announcing plans for intravenous drug doses and radiation to treat melanoma found in his brain after surgery to remove a tumor from his liver. (AP Photo/David Goldman, File)

FILE - Former U.S. President Jimmy Carter teaches Sunday school at Maranatha Baptist Church, Nov. 3, 2019, in Plains, Ga. (AP Photo/John Amis, File)