J.C. Ryle emphasizes the critical need for authenticity in religion, warning against the prevalence of hollow and counterfeit faith in contemporary society. He defines authentic religion as genuine, sincere, and deeply rooted in the heart, contrasting it with superficial expressions of faith that lack true substance. Ryle provides tests to evaluate the authenticity of one's faith, urging believers to examine their feelings towards sin, Christ, and the fruits of their lives. He concludes with a call to action, encouraging individuals to seek a true relationship with Christ and to be authentic in their Christian walk, as only genuine faith will endure the test of time and judgment.

John Wesley explores the concept of enthusiasm in the context of true Christianity, contrasting it with a superficial form of religion that lacks heartfelt devotion. He emphasizes that those who genuinely pursue a relationship with God may be labeled as 'mad' by the world, as their focus on eternal matters often leads to a disregard for temporal concerns. Wesley warns against various forms of enthusiasm, including self-deception about one's spiritual state and the mistaken belief in possessing divine gifts that one does not have. He encourages believers to seek a genuine understanding of God's will through scripture and reason, rather than relying on subjective experiences or impressions. Ultimately, Wesley calls for a balanced approach to faith that avoids the pitfalls of both enthusiasm and nominal Christianity.

Phil Beach Jr. emphasizes the importance of recognizing the hidden treasures of the Kingdom of God, urging believers to sell everything for the sake of Christ, who is the ultimate treasure. He explains that true Christianity is not about outward appearances or worldly success, but about a deep, personal relationship with Jesus, who refines us like silver in the fire. The sermon calls for a heart transformation, encouraging the congregation to embrace the refining process that God uses to purify His people. Beach highlights that the true value lies in being conformed to the image of Christ, rather than seeking earthly rewards or recognition. Ultimately, he challenges listeners to evaluate their priorities and ensure that their love for God surpasses all else.

John Wesley defends true Christianity by addressing the corruption in both doctrine and practice within the Church, lamenting how the faithful city has become unfaithful. He emphasizes the responsibility of ministers as watchmen to warn the people against false teachings and the importance of adhering to the true gospel of Christ, which is justification by faith alone. Wesley expresses his deep concern for the state of the Church, urging believers to recognize the necessity of genuine holiness and the power of God in their lives. He calls for a return to the foundational truths of Christianity, warning against complacency and the dangers of a mere outward form of godliness without true spiritual power. Ultimately, he seeks to inspire a revival of faithfulness and purity in the Church, appealing to God's grace for restoration.

A.W. Tozer emphasizes that becoming a true saint is not an automatic or painless process, but rather a continuous journey of spiritual preparation, testing, and discipline. He critiques the prevalent notion of 'instant' Christianity that suggests a simple formula can lead to genuine faith, arguing that this approach only scratches the surface of true Christian experience. Tozer calls for a deeper understanding of the transformative work of the Holy Spirit in the believer's life, highlighting that the new birth is just the beginning of a lifelong commitment to spiritual growth.

A.W. Tozer emphasizes the profound transformation that occurs when one is 'born of God,' highlighting the inner illumination and revelation that confirms our identity as children of God. He reflects on Charles Wesley's hymn, illustrating that true Christianity is not about convenience but about recognizing Jesus Christ as Lord. Tozer asserts that genuine faith leads to a willingness to do God's will, even at great personal cost, and that this revelation is accessible to all who earnestly seek it.

Andrew Murray emphasizes that the work of the Holy Spirit is central to true Christianity and the New Testament church. He explains that the Holy Spirit serves as God's seal on believers, enabling them to understand divine truths. The effectiveness of a believer's life hinges on their relationship with the Holy Spirit, who must be recognized and allowed to lead. Murray argues that a revival in the church requires both ministers and members to acknowledge the Holy Spirit's role as the ultimate teacher. This understanding transforms a believer's life, allowing them to experience the Spirit as the very essence of their being.

T. Austin-Sparks explores the true meaning of being a Christian, emphasizing that it is not merely about adopting a religion, joining a church, or participating in a movement. He highlights that true Christianity begins with the realization of Jesus as a living person, followed by a commitment to His Lordship and the indwelling of Christ through the Holy Spirit. Sparks warns against the dangers of assuming religious identity without genuine transformation and stresses the importance of a personal relationship with Christ. The essence of being a Christian is encapsulated in the experience of Christ living within us, guiding our lives.

Charles Finney emphasizes that the joy set before Christ was not for His own salvation or glory, but for the redemption and eternal joy of humanity. He argues that true Christianity embodies the spirit of self-sacrifice and devotion to the good of others, mirroring Christ's own dedication to His mission. Finney asserts that nothing less than this selfless mindset can be considered real Christianity, as it aligns with the highest good of being and prepares believers for the joys of heaven. He encourages Christians to embrace this spirit, as true happiness is found in self-denial and serving others, just as Christ did. Ultimately, Finney calls for a deep understanding of Christ's purpose to fully grasp the essence of Christianity.