Largely under the radar, theologians and Vatican insiders say, Francis has not only dwelled far more on Satan in sermons and speeches than his recent predecessors have, but also sought to rekindle the Devil’s image as a supernatural entity with the forces­ of evil at his beck and call.

Last year, for instance, Francis laid hands on a man in a wheelchair who claimed to be possessed by demons, in what many saw as an impromptu act of cleansing. A few months later, he praised a group long viewed by some as the crazy uncles of the Roman Catholic Church — the International Association of Exorcists — for “helping people who suffer and are in need of liberation.”

“ ‘But Father, how old-fashioned you are to speak about the Devil in the 21st century,’ ” Francis, quoting those who have noted his frequent mentions of the Devil, said last month while presiding over Mass at the Vatican’s chapel in St. Martha’s House. He warned those gathered on that chilly morning to be vigilant and not be fooled by the hidden face of Satan in the modern world. “Look out because the Devil is present,” he said.