“It is a self-evident truth that those who persist in spiritual disciplines grow in grace, and those who don’t persist, don’t grow. I have never met a mature believer who is not faithful in private devotions. Like the cumulative, compounding effect of military training, the daily work of prayer, Bible reading, and meditation will shape us more and more into the likeness of Christ. And when we are thinking in terms of contentment, this likeness is the mark we are after, because Christ remains the most content man who ever lived.”