The sermon examines the progressive spiritual virtues outlined in 2 Peter 1, urging believers to cultivate faith, virtue, knowledge, temperance, patience, godliness, brotherly kindness, and charity. It addresses two groups of listeners: those who have forgotten their purification from sin and those doubting their salvation, offering this list as evidence of genuine faith. The preacher emphasizes that these qualities must be added diligently to one's existing faith, which serves as the essential foundation for all Christian growth. By abiding in Christ and allowing trials to produce patience, believers can confirm their calling and avoid spiritual barrenness. Ultimately, the message calls for a vibrant, active walk with God that reflects His character and demonstrates the reality of salvation through love and self-control.