This sermon presents a comprehensive spiritual checkup modeled after David's plea in Psalm 139:23–24, calling believers to examine their spiritual health through four key areas: the temperature of their love for Christ and others, the steadiness of their spiritual pulse in service, the balance of their spiritual appetites through consistent engagement with Scripture, and the condition of their mind in terms of peace, contentment, and godly thinking. Rooted in biblical principles—from Christ's command to love one another, to Paul's exhortations on obedience, meditation, and self-denial—the message emphasizes that genuine spiritual vitality requires honest self-assessment, repentance, and a deliberate pursuit of holiness. It warns against complacency, the influence of ungodly companions, and self-reliance, urging believers to embrace godly discipline, rest, and the filling of the Holy Spirit. Ultimately, the sermon calls all to a renewed commitment to Christ, urging both the unconverted to embrace salvation and the saved to grow in grace, truth, and obedience as they enter a new year.