I’ve been meditating recently on the parable of the unjust steward, found in Luke 16:1-13. Since Jesus Himself calls the guy unjust, obviously it’s not the cheating that Jesus is recommending. What does Jesus want us to take away from this?
The steward has a short window of opportunity where he has access to his master’s accounts, and he makes the most of his temporary access to make friends for the long term. We find ourselves in a similar situation. Everything you have can just disappear (as some of our brothers and sisters in California recently found out). But while you have it, what are you doing with it?
We can squander the goods we have, or we can use them to lasting effect. Few things are as fungible as a warm meal. The scraps you don’t eat will be cold in an hour and inedible in days; what you do eat will end up in your toilet in a day or two, depending on your intestinal transit time. But that meal, that future poop, shared with someone else, becomes an expression of love and care. Applied to someone at the right moment, that very transitory matter becomes a lifelong conviction that they’re loved.
The alchemists of old expended enormous effort trying to turn lead into gold. In hospitality, we do something much more spectacular, and we succeed at it! We transmute the basest of matter into something better than gold: the pleasure of God and the care of His image. So go forth and be hospitable to someone who can’t pay you back.
Full Contact Christianity 
There is another aspect to the parable that seems implicit in the “writing down” of debts: the steward bridges the gap between the master and his debtors and thereby exemplifies the calling of image-bearers to be a “kingdom of priests.”
Yes; in a recent conversation with friends, I wondered aloud about the significance of the mechanism being reduction of debts as opposed to something else. I’m still kinda mulling that over.