After you accomplish something really hard, what do you hope for?
For some it is the satisfaction of a job well done. For others it is a simple pat on the back by your boss. Perhaps it is a bonus or pay raise. Maybe a trophy. The list is long.
Why do I bring this up? Because in Genesis chapter 14, beyond all the names (which are meant to ground us in the fact that a war really happened), we see Abram not wanting an excessive reward. Why?