Former president Jimmy Carter has taught two Sunday School classes in his hometown of Plains, Georgia, three days after receiving radiation treatment for cancer.
The 90-year-old gave one lesson to about 300 people filling the small Baptist church that he and his wife Rosalynn attend.
Mr Carter regularly gives the lessons and has been teaching classes since his teens.
He recapped the details of his health at Maranatha Baptist Church but moved on after a few minutes.
“That’s enough of that subject,” he said before beginning the lesson on faith, love and personal relationships.
He also encouraged the crowd to be faithful when faced with failure or disappointment.
“Say, ’God, I’m really troubled and I ask you to give me the strength to bear whatever I have on my shoulders and to face whatever comes to me’,” Mr Carter said.
He paced across the front of the sanctuary, occasionally returning to a podium to read aloud or glance at notes through a pair of slim wire glasses.
Gesturing frequently as he spoke, Mr Carter made direct eye contact with many congregants and occasionally glanced over to the left side of the church where his wife sat.
He promised the crowd at the church he would be back to take photos with them after teaching a second class at the nearby high school and asked that they come up in groups.
“If you come up by yourself, I won’t say anything but I’ll wonder why you don’t have any friends,” Mr Carter said before exiting to a burst of laughter.