A.W. Tozer emphasizes that true knowledge of God comes from spiritual experience rather than intellectual reasoning. He explains that this awareness is intuitive and deeply rooted in the consciousness of the believer, which transcends mere thought. Tozer critiques Descartes' philosophical approach, asserting that self-awareness and knowledge of God precede rational thought. The inward witness of the Spirit provides a profound understanding of God that is beyond words, resulting from faith and obedience to Scripture. This experience is the essence of true religion, highlighting the importance of a personal relationship with God.