Bill McLeod emphasizes the critical need for believers to recognize and renounce occult involvement, explaining that many individuals struggle with spiritual affliction due to their engagement with occult practices. He illustrates this through various testimonies, including a girl who found freedom after confronting her occult ties, and warns that rebellion against God's will can lead to demonic invasion. McLeod stresses the importance of submitting to God, resisting the devil, and the necessity of cleansing one's life of any occult influences to experience true spiritual freedom. He encourages believers to seek healing and deliverance through prayer and reliance on God's Word, while also highlighting the rising prevalence of demonic activity in the world today.