In answer to Smoky's original query as to whether Jesus would use an illustration straight out of paganism? I'd say in this instance absolutely. And as I think Jesus never did anything without a reason or purpose, this instance was very poignant because He was not speaking or addressing the "masses", but a very select group. LK.16:14 " now the Pharisees who were lovers of money, also heard all these things and THEY DERIDED HIM".(turned up their noses)
So I believe what the Old Student posted, it is misunderstood and mis-interpreted. I personally believe it to be a tongue lashing by Jesus, partially (IMO) because it only appears in Luke because he wasn't a Hebrew, but a Greek Physican, and the other Disciples being Jewish didn't feel comfortable because the Pharisee's still loomed large religiously. Like I said, just my opinion.
Some have argued that its not a parable because it mentions a proper name, nonsense, It doesn't give a name to the rich man, but (LOL) I'll bet the Pharisees knew who he represented. And, as names in Biblical times had meaning, the name He chose added more coals to the fire. The Greek Lazarus means "helpless, destitute of help", its a contraction of the Jewish El'Azar meaning God has helped.
Now the reasoning about how the parable came about can be found at LK.16:15 "and He said to them, (Pharisees) you are those who justify yourselves before men, but God knows your hearts, for what is highly esteemed among men is an abomination in the sight of God".
Which is also (IMO) why I believe He colored his illustrative parable with Greek mythology because the Pharisees thought everything not Jewish was forbidden and they "only" were pure, but Jesus knew they completely understood every word He spoke.
And just for those that don't believe its a parable then they must not believe the Bible or they missed a couple passages-- MATT.13:34-35 "All thes things Jesus said to the multitude in parables and without a parable He did not speak to them. That all might be fulfilled which was spoken by the Prophet saying:"I will open my mouth in parables, I will utter things kept secret from the foundation of the world". And later in JN.16:29-30 "His Disciples said to Him, " see, NOW you are speaking plainly, and using no figure of speech, now we are sure that You know all things and have no need that anyone should question you".
And so, like the Old Student referenced the end is the moral where He tells them He gave them the Law and the Prophets and they killed them, so what more can He do, they are lost cause they won't listen.