Unidentified Papal Ceremony * Joseph Siffred Duplessis (1725-1802)

The picture has something of this: Renaissance, people, saint, baroque, sculpture, Mary, woman, man, church, two, baby, reclining, nude, god, virgin, statue.
Perhaps it’s a painting of a group of people in a room with one person laying on the floor and another standing in the middle of the room with his head.