The central message of this sermon is that true understanding and growth come not from external sources such as sermons or books about the Bible, but from directly engaging with the Word of God itself, guided by the Holy Spirit. The teacher emphasizes that the Bible is objective truth, independent and external to human thoughts and perceptions, and that it has the power to correct and guide us towards a deeper understanding of reality. By studying Scripture, individuals can develop character and a deeper relationship with God, rather than relying on secondary sources or intellectualism. The takeaway from this sermon is that believers have direct access to the author of the Bible through the Holy Spirit, allowing them to understand and engage with Scripture in a way that transcends human limitations, and that this relationship is key to spiritual growth and maturity.