Peter Paul Rubens, Flemish (active Italy, Antwerp, and England), 1577-1640 – The Emblem of Christ Appearing to Constantine Philadelphia Museum of Art

The picture has something of this: saint, god, Renaissance, holy, baroque, book, people, nude, sculpture, interior, man, ancient, sword, fresco, allegory, group.
Perhaps it’s a painting of a group of men standing next to each other in front of.