This sermon establishes biblical authority as the foundational distinctive of Baptist faith and practice, asserting that Scripture alone serves as the final and infallible guide for doctrine and church polity. The speaker argues against relative truth and extra-biblical traditions by highlighting the historical reliability, textual evidence, and transformative power of the Bible. Emphasizing the need to know the 'why' behind beliefs, the message encourages believers to personally study and verify teachings against God's Word, following the example of the Bereans. The presentation concludes by demonstrating that Satan attacks Scripture while Jesus defeats temptation through it, reinforcing the necessity of holding fast to divine authority.