The sermon explores the progression from spiritual infancy to maturity in the Christian life, drawing parallels to physical growth and emphasizing the importance of moving beyond dependence on basic sustenance to a diet of spiritual meat. It identifies key indicators of immaturity, such as envy, strife, division, pride, and instability, contrasting them with virtues like kindness, contentment, peace, selfless service, and a steadfast commitment to biblical truth. Ultimately, the message underscores the necessity for ongoing growth in grace and knowledge of Christ, recognizing that a mature faith leads to effective service and brings glory to God.