In this message, Mac emphasizes the importance of understanding church history, particularly the letter to the church in Thyatira from Revelation 2:18-29. He highlights the contrast between those who follow the teachings of Jezebel, a symbol of corruption, and those who remain faithful. Mac points out that the church's history reflects a transition from faith to superstition, particularly during the dark ages, when the Roman Catholic system emerged. He discusses the dangers of allowing tradition to overshadow Scripture, as seen in the teachings of the Catholic Church regarding Mary and the authority of the Pope. Mac warns against the church's historical alliances with political powers, which led to corruption and moral decline. He also addresses the impact of the Crusades and the rise of Islam, suggesting that the church's failures contributed to the spread of Islam as a judgment on a degenerate church. Ultimately, Mac calls for a return to the simplicity and purity of the Gospel, urging believers to hold fast to God's Word and to avoid the influences of corruption represented by Jezebel.