I wanted to add that the Rich Man hadn't listened to Moses and the Prophets and apparently hadn't followed Mosaic law because of that. It was a warning from Jesus that God didn't like those who disobeyed him, even if they were covered by the Covenant, and they could have their place replaced by gentiles. It was like Jesus was teaching some sort of Reform, saying to obey God or else. A very powerful message in those times and these times.