A.W. Tozer emphasizes the role of moral physicians in preaching, highlighting that truth must be tailored to the specific needs and circumstances of the audience. He draws on examples from prophets, apostles, and Jesus, who adapted their messages to address the moral and spiritual conditions of their people. Tozer argues that today’s religious landscape requires skilled leaders who can discern the current spiritual ailments and prescribe appropriate remedies, rather than merely repeating doctrinal statements. He stresses the importance of being attuned to the Holy Spirit's guidance to effectively communicate God's message in a relevant way.

John Wesley's sermon 'On Conscience' emphasizes the critical role of conscience in guiding moral behavior and understanding right from wrong. He explains that conscience is a divine gift that allows individuals to discern their actions in relation to God's will, serving as both a witness and a judge. Wesley categorizes different types of conscience, including good, tender, scrupulous, and hardened, and stresses the importance of obeying one's conscience to maintain its sensitivity. He concludes with practical directions for nurturing a good conscience, urging believers to live in constant awareness of God's presence and to align their actions with His word.