In this sermon, Pastor Roger Cook emphasizes the importance of speaking and believing in alignment with what God says about us. He shares personal experiences of speaking encouraging words to others and witnessing the power of prayer in bringing about positive outcomes. Pastor Cook also delves into the concept of dwelling in the secret place of the Most High and the significance of declaring God's promises over our lives. Throughout the sermon, he encourages the congregation to have boldness in listening to the Holy Ghost and to speak in agreement with God's word, ultimately leading to a life filled with revival and the manifestation of God's promises.