Erlo Stegen emphasizes the transformative power of the Holy Spirit, urging preachers to ignite their tongues with the fire of God rather than the destructive fire of hell. He draws parallels between the day of Pentecost and the need for believers to speak words that lead to repentance and life, rather than gossip and destruction. Stegen warns against being 'Christian cannibals' who harm one another with their words, highlighting the importance of examining the source of our speech. He illustrates the impact of our words through personal stories, calling for a revival of God's fire in our lives to proclaim His mighty works. Ultimately, he challenges listeners to ensure they are filled with the Holy Spirit and to avoid quenching His presence in their lives.