Thomas Brooks emphasizes the dire spiritual condition of humanity, asserting that we are not merely sick due to sin, but spiritually dead in our transgressions. He explains that this deadness renders us incapable of any good, and only God, the physician of souls, can bring us to life through His grace. Brooks highlights that our nature is so corrupted that we cannot even think or act righteously without divine intervention. He reassures us that through God's immense love and mercy, we can be made alive with Christ, showcasing the transformative power of grace. Ultimately, it is God alone who can revive the spiritually dead and grant them new life in Christ.