King Gustav III Attending Christmas Mass in 1783, in St Peter’s, Rome Louis Jean Desprez (1743-1804)

The picture has something of this: people, church, group, religious, architecture, saint, many, cathedral, turning point, altar, cross, god, worship, building, castle, city.
Perhaps it’s a painting of a large group of people in a large room with columns and a statue in the center of the room is surrounded by other people.