In one of th churches, called “Bom Jesus”, a saint is buried in a glass sided coffin. It’s the corpse of Francis Xavier, revered here in India for his missionary work. Every 10th year they take out the coffin and cary it around town in a parade.
But Xavier was really an abominable person, one of the founders of the Jesuit order, and he was sent to Goa to carry out a campaign. Many jews that had fled the Iberian peninsula when the moors were driven out had taken refuge in India. They fled because they wouldn’t convert to Christianity, and Xavier was ordered to track them down, arrest them, torture them and burn them at the stake. If they converted the were strangled before they were burnt, as an “act of mercy”.