Pope penned resignation letter in 2013: report

"I have already signed my resignation. Tarcisio Bertone was Secretary of State. I signed it and I told him: 'In case of impediment for medical reasons or whatever, here is my resignation,'" the Pope said during a 2022 interview, according to a report at the time from the New York Post.

Francis also received blood transfusions after tests revealed he had a low platelet count, according to a Reuters report.

Francis, who turned 88 in December, has long faced questions about what he would do if health issues left him unable to carry out his duties. Such questions would have been unheard of prior to 2013, when Pope Benedict XVI resigned, becoming the first papal resignation in over 600 years.

Francis revealed during the 2022 interview that he gave his resignation letter to the Vatican secretary of state, Cardinal Tarcisio Bertone, a holdover from Benedict XVI, about six months after being elected to the papacy in March 2013.

"You have it. I don't know to whom Cardinal Bertone may have given it, but I gave it to him when he was secretary of state," Francis said at the time. 

"I have recently received many messages of affection, and I have been particularly struck by the letters and drawings from children," Pope Francis posted on X Sunday. "Thank you for your closeness, and for the consoling prayers I have received from all over the world!" 

"I urge you to continue your apostolate with joy and to be a sign of a love that embraces everyone, as the #GospelOfTheDay suggests," another post said. "May we transform evil into goodness and build a fraternal world. Do not be afraid to take risks for love!"