Great discussion. It would seem the traveler in the story is but an agent necessary to expose the mindset and heart. of the rich man. The traveler was going to be fed but with no intention does the rich man want to disturb from the plenty God has given him. Whether son, daughter, relative, friend, acquaintance, or even a stranger, the rich man's hospitality reveals an unthankful heart and one whose eyes are on the riches of the world and not the beauty of God from whom all blessings flow ( they do not honor Me, or give Me thanks)) The only source of unending satisfaction does not have its roots in the material. It is the meet from God, not the meat of lambs.