A.W. Tozer emphasizes that true religion is rooted in the will, not in feelings, and that our spiritual direction is determined by our choices. He illustrates this with examples from the Bible, such as Jacob's vow, Daniel's purpose, and Jesus' resolute journey to the cross, highlighting that moral determination is essential in serving the Lord. Tozer argues that many biblical figures achieved spiritual greatness through a steadfast commitment to God's will, despite facing challenges and opposition. He encourages believers to set their sails with purpose and determination, rather than being swayed by external circumstances. Ultimately, the sermon calls for a deliberate choice to follow God wholeheartedly.