Viewed from that spot, it's hard to tell where the nave vault ends and the painting begins. It looks as if the ceiling opens up into the wider sky with figures floating upward like bubbles in seltzer.
It's an undeniably spectacular and irresistible effect. The painting is supposed to be a complex allegory of the global mission of the Jesuit order, but all that is lost in the dazzling theatrical spectacle set out before us on the ceiling.
The whole painting on the nave ceiling once again.