Harry Ironside addresses the concept of ultra-dispensationalism, emphasizing the importance of rightly dividing the Word of Truth as instructed by Paul to Timothy. He highlights the dangers of misinterpreting Scripture, particularly through the lens of Bullingerism, which leads to heretical beliefs and a misunderstanding of God's dealings with humanity across different dispensations. Ironside warns that such teachings can produce spiritual pride and division among Christians, ultimately detracting from the true message of the Gospel. He calls for a careful and humble approach to studying the Scriptures, ensuring that each doctrine is placed in its proper context. The sermon serves as a reminder of the need for discernment in theological teachings to maintain the integrity of the faith.