Art Katz emphasizes the critical role of intercession and corporate unity in the effectiveness of public ministry. He argues that the quality of prayer and the spiritual bond among believers directly influence the power of the spoken word. Katz highlights the example of Peter's sermon at Pentecost, illustrating how collective agreement and participation enhance the message's impact. He warns against the observer mentality prevalent in modern society, urging believers to recognize their shared responsibility in the proclamation of God's word. Ultimately, true intercession requires self-denial and a commitment to the collective spiritual life of the church.