Could someone explain the meaning of the parable in Luke, 19?
Self-improvement, essentially. The servants are all given different numbers of minas/talents to start off with and are expected to grow their number by their master (hint hint, the master is God, I am just an amazing theologian I know). The first two servants successful go out and manipulate the stock market to double their funds and deliver them to the master, who is pleased that they have taken the gifts he gave them and made more of it. But the third servant, that useless fuck, just went and hid it in his mattress like the coward he is. This cowardice results in him losing what little he has and it being given to the best servant. It's topped off with him killing everybody who didn't want him to be the master, which I think is just an obligatory restatement of obey the Lord or die, which shows up just about everywhere in the bible.
The message is that you have to use what abilities God gives you, even if it isn't much, to make yourself greater. If you don't you will lose whatever you do have, be it small or great. Further, if you show that you are trustworthy then the scale doesn't matter, and you'll be entrusted with better things.
Of course, if I'm going to be all subversive this has the moral problems of God either unfairly or arbitrarily assigning natural abilities, and taking from the weakest to feed the elite, who were born for success anyway.