The sermon diagnoses the human condition as fundamentally flawed by a deceitful and wicked heart that prefers lies to truth. It argues that people suppress the evident knowledge of God through willful blindness and self-deception regarding their own sinfulness. The message emphasizes that religious efforts cannot remedy this spiritual death, which requires a supernatural new birth through faith in Jesus Christ. By trusting in Christ's sacrificial blood rather than personal merit, individuals can be justified and reconciled to God. The preacher urges immediate repentance and belief to escape coming judgment and receive eternal life.