This sermon is from a series Haddon Robinson did for the Dallas Theological Seminary. All four sermons from the series are available on DTS's website. Each is worth hearing. Dr. Robinson excels at several levels of preaching, but I am always most impressed in his ability to say succinctly what the sermon is about.
Watch for the lines: "Your neighbor is anyone whose need you see, whose need God put you in a position to meet" and
"What you are determines what you see."