D.L. Moody emphasizes that true love, peace, and joy are gifts from God that come when a person turns from sin and receives Christ by faith. He warns against the futility of trying to manufacture these graces through human effort, asserting that they are divine acts that flow from the Holy Spirit. Moody highlights the importance of spiritual growth, urging believers to cultivate these qualities to avoid being stunted in their faith. He references Peter's exhortation to add virtues to faith, which leads to a fruitful Christian life. Ultimately, Moody calls for a higher standard of living among Christians to unleash the true power of Christianity in the world.