John Lightfoot on Luke 16:19

[There was a certain rich man.] Whoever believes this not to be a parable, but a true story, let him believe also those little friars, whose trade it is to shew the monuments at Jerusalem to pilgrims, and point exactly to the place where the house of the 'rich glutton' stood. Most accurate keepers of antiquity indeed! who, after so many hundreds of years, such overthrows of Jerusalem, such devastations and changes, can rake out of the rubbish the place of so private a house, and such a one too as never had any being, but merely in parable. And that it was a parable, not only the consent of all expositors may assure us, but the thing itself speaks it.

The main scope and design of it seems this, to hint the destruction of the unbelieving Jews, who, though they had Moses and the Prophets, did not believe them, nay, would not believe, though one (even Jesus) arose from the dead. For that conclusion of the parable abundantly evidenceth what it aimed at: "If they hear not Moses and the Prophets, neither will they be persuaded though one rose from the dead."