Ian McKellar speaks at NCCB about taking back what the devil has stolen, emphasizing the power of corporate worship, prayer, and the importance of being proactive in faith. He references the story of David from the Bible, underscoring themes of courage, community support, and divine empowerment. The message encourages listeners to be active in their faith and community, to reclaim their lives and society from negativity, and to spread God’s blessings through generosity and grace.