Pope Francis arrives to lead the holy mass , at the King Baudouin stadium in Brussels, Belgium, Sunday, Sept. 29, 2024. (AP Photo/Omar Havana)

Faithful wave flags as Pope Francis arrives to lead the holy mass , at the King Baudouin stadium in Brussels, Belgium, Sunday, Sept. 29, 2024. (AP Photo/Omar Havana)

Faithful wave flags as Pope Francis arrives to lead the holy mass , at the King Baudouin stadium in Brussels, Belgium, Sunday, Sept. 29, 2024. (AP Photo/Omar Havana)

Pope Francis presides over the Sunday mass at King Baudouin Stadium, in Brussels Sunday, Sept. 29, 2024. (AP Photo/Andrew Medichini)

A faithful reads a book as Pope Francis presides the holy mass, at the King Baudouin stadium in Brussels, Belgium, Sunday, Sept. 29, 2024. (AP Photo/Omar Havana)

A faithful exchange a sign of peace as Pope Francis presides the holy mass , at the King Baudouin stadium in Brussels, Belgium, Sunday, Sept. 29, 2024. (AP Photo/Omar Havana)

Faithful listen as Pope Francis presides the holy mass , at the King Baudouin stadium in Brussels, Belgium, Sunday, Sept. 29, 2024. (AP Photo/Omar Havana)

A faithful prays as Pope Francis presides the holy mass , at the King Baudouin stadium in Brussels, Belgium, Sunday, Sept. 29, 2024. (AP Photo/Omar Havana)