J.R. Miller emphasizes that Christians often live below their privileges, which are both glorious and divine. He encourages believers to forget past failures and strive towards the heavenly calling, highlighting the importance of daily feeding on the Word of God and engaging in secret prayer for spiritual renewal. Miller illustrates that the church serves as a vital source of strength and inspiration, urging Christians to fully utilize the blessings and opportunities available to them. He concludes by reminding the congregation that while the ideal Christian life may seem unattainable, striving towards it daily brings them closer to their ultimate goal of becoming like Christ.