J.R. Miller emphasizes the intertwined nature of strength and beauty in a Christian's character, arguing that true nobility arises from the combination of both qualities. He illustrates that while strength alone can be harsh and beauty can be weak, the ideal Christian life embodies both, reflecting God's own nature. Miller encourages believers to strive for spiritual growth, recognizing that imperfections and struggles are part of the journey towards holiness and that true religion permeates every aspect of life. He reminds us that our efforts, even when flawed, are beautiful in God's eyes when motivated by love and faith. Ultimately, the sermon calls for a life that is both strong in faith and beautiful in character, serving as a blessing to others.