ANALYSIS: Through his words, gestures and even liturgical picks, the new Pope is synthesizing what came before him.

Peruvians have celebrated the election of a man many knew as a missionary and bishop during his 2 decades of service in the South American country.

Hector Camacho remembers Robert Prevost, set to be formally inaugurated as Pope Leo XIV on Sunday, as a young jeans-wearing missionary from Chicago with broken Spanish, landing in Peru at a time when the country was being torn apart by internal conflict.

Heather and Dominic Jaroch tell PEOPLE about the time Pope Leo XIV, then simply known as “Father Bob," flew back to Chicago to preside over their wedding as a favor to her late father Ed

Amid the mostly joyous reception for Robert Prevost, who stunned the world when he emerged from the loggia of St. Peter’s as Pope Leo XIV, one cloud on his reputation came from groups alleging that he had mishandled sexual abuse cases.

Something like this is a nice little shot in the arm for the organization,” said chief revenue and marketing officer Brooks Boyer.

Louis Prevost defended his inflammatory social media posts, but said he’s been attempting to "bite my tongue" since his younger brother’s surprise election as pope