The Mystic Marriage of St. Catherine Veronese (Paolo Cagliari) (1528-1588)

The picture has something of this: saint, people, Renaissance, Mary, god, book, woman, group, virgin, baby, kneeling, man, veil, Apostle, baroque.
Perhaps it’s a painting of a group of people sitting on the steps of a building with a bird flying in the sky above them and a flag in the background.