I always feel frustrated when this verse gets abused as a condescension towards work to alleviate poverty and suffering. The point, I think, is mainly in the words that come next, "But you will not always have Me." Jesus' argument was not to say to stop working to alleviate poverty but to recognize the unique circumstances of what was happening at that moment.
Along with my new church's current sermon series which often deals with such matters, I have been binging this year on reading books calling Christians to wake up from the stupor of our culture and become aware of our call to serve those in desperate need. So far this has included "Rich Christians in an Age of Hunger", "Charity in Truth" and "Radical". Pope Benedict's work has been my favorite, but all have something valuable to share. I would also recommend some of my past reads including "The End of Poverty" and "Living High and Letting Die" which are secular reads from an economist and a philosopher, respectively.
I am finding several challenges in attempting to live out the calling these authors inspire me to do. One of these is that if I am not careful, I can drive myself crazy with guilt. As David Platt, the author of Radical points out, nearly everything we purchase as Americans is relatively speaking a luxury when considered on a global scale. For instance, I could have eaten much more simply yesterday (and presumably shared the savings with those in need), but instead for the luxury of convenience I ate out for both lunch and dinner, all the while knowing the problems of hunger that largely come from our horribly discriminating global distribution network of food. Is what I ate wrong?
Another hazard is that being passionate about this kind of thing can lead a person to become very judgmental of others. Displays of overt luxury from others start to become odious and one can easily begin to assume that these individuals are greedy and selfish when that might not be the case at all. Jesus' stern rebuke to Peter comes to mind here; "What is that to you? You must follow me."
Perhaps the biggest struggle is knowing at what point "balance" becomes "lukewarm." Material possessions are not inherently evil and we are free to enjoy them as we give thanks to God for them. But they also should also not become cumbersome obstacles towards sharing generously and loving others. Where that line is for each person and in each circumstance is ultimately between them and God, as we seek to obey the Word and be led by the Spirit. Father, help me to choose wisely and lovingly.