Baptism of Christ Giovanni Battista Tiepolo (1696-1770)

The picture has something of this: saint, Renaissance, god, book, people, fresco, holy, aura, baby, baroque, interior, virgin, church, Mary, kneeling, woman.
Perhaps it’s a painting on the side of a wall of a painting of a group of people in front of a lake and a man with a dog in the foreground.