The sermon centers on the profound truth that Jesus Christ, as the rejected cornerstone, is the foundation of all genuine Christian fellowship and spiritual blessing, a reality that should continually amaze believers. It warns against the human tendency to replace heartfelt devotion with religious routine, urging the congregation to preserve their first love by prioritizing intimacy with Christ over institutional expectations, and to avoid imposing personal burdens or standards on others. Drawing from Scripture and personal reflection, the message emphasizes the diversity of gifts and callings within the body of Christ, affirming that unity does not require uniformity but is rooted in mutual submission, grace, and a shared focus on Jesus. The preacher calls for humility, caution against pride and resentment, and a continual surrender of self to God, reminding listeners that true fellowship is not measured by attendance or activity but by the Spirit's presence and the heart's surrender to Christ.