Last Sunday, in Bible Study, as we started our look into the doctrine of sin, I pointed out that the root or essence of sin is NOT “seeking one’s own”.  In other words, I argued, that selfishness is not sinful unless it seeks its own good at the expense of another.  If we pursue our good or joy in God, then that type of “selfishness” is not only not sinful but is specifically commanded in Scripture.  In the following video,  John Piper explains how “seeking your own joy” in loving another is not sinful but fits within Biblical categories of love, specifically 1 Corinthians 13:1-5.  Take a look  for yourself.