David Wilkerson emphasizes that the church's foundation was built on repentance, as seen during Peter's sermon at Pentecost, which united believers in love and evangelism. However, he warns that idolatry, particularly the ambition for success, has led to the church's degeneration from its noble beginnings. This ambition, often justified by doctrine, has become a powerful idol that distracts believers from their true purpose. Wilkerson calls for a return to the gospel of self-denial and a focus on God's glory rather than worldly recognition. He highlights the need for the church to recognize and confront these idols to restore its original mission.