Episode 2 of The Immutable Word continues the Why Baptist series, emphasizing the Baptist (Baptistic) distinctive that the Bible is the sole and final authority for faith and practice. Robert contrast four approaches to authority—Bible plus tradition, scholarship, or experience, and the Baptistic claim of Bible plus nothing—and trace scriptural, historical, and theological reasons for Sola Scriptura.

The episode covers Jesus’ and the apostles’ testimony about Scripture, the sufficiency and self-attestation of the Bible, the canon and its origin, manuscript streams and preservation, and how these convictions shape Baptist distinctives summarized by the BAPTIST acrostic.