A.B. Simpson emphasizes the significance of humility and authenticity in ministry, drawing parallels between Paul's testimony and the transformative power of the Gospel. He highlights that true credentials come from the lives changed through one's ministry, rather than letters of recommendation. Simpson also discusses the source of a minister's power, which is rooted in God's sufficiency, and the glory of the Gospel that brings life and righteousness. He urges ministers to maintain simplicity and faithfulness in their message, while recognizing the hindrances that can obscure the Gospel from those who are lost.

Art Katz emphasizes the dangers of adopting an inauthentic ministerial persona, which can lead to manipulative speech and hinder true calling. He warns that personal ambition and a desire for recognition can obstruct one's ability to align with God's interests. Drawing from Oswald Chambers, Katz highlights the importance of losing one's self-identity to fully embrace the Divine life, cautioning against the temptation to inflate one's sense of mission. He encourages ministers to remain loyal to God rather than to their own convictions, which can often lead to fanaticism rather than faithfulness.

Leonard Ravenhill's sermon 'Puppet or Prophet' emphasizes the transformative power of encountering Jesus, as illustrated by Paul's conversion on the road to Damascus. He contrasts the role of preachers as mere puppets versus true prophets who are called and empowered by God to witness and minister. Ravenhill highlights the urgency for preachers to be authentic and filled with the Holy Spirit, rather than just performing rituals or following traditions. He calls for a generation of ministers who are passionate and devoted to spreading the Gospel, reflecting the radical change that comes from a genuine encounter with Christ. The preacher urges the congregation to recognize their own calling and the importance of living a life that reflects God's glory.

A.W. Tozer emphasizes the importance of integrity in the life of a pastor, arguing that a true servant of God should not change his character or demeanor when entering the pulpit. He warns against the hypocrisy of being a different person in ministry than in everyday life, advocating for a consistent spirit of reverence and authenticity. Tozer calls for pastors to embody the same values and behaviors in all aspects of their lives, ensuring that their public ministry reflects their private character.