Knowing what Paul knew about heaven made him think very differently about earth. As Thomas Watson said, "Spiritual things satisfy; the more of heaven is in us, the less earth will content us." It's like a kid eating his vegetables while eyeing the chocolate cake promised after the meal (the salad becomes a means to an end). Jesus taught us to pray, "Thy kingdom come," indicating we should be longing for heaven. So how do we effectively live on earth with heaven ahead?