C.H. Spurgeon emphasizes the importance of being sensitive to God's warnings, as exemplified by King Josiah, who humbled himself and trembled at God's Word. Spurgeon highlights that those who possess a tender heart and practice self-humiliation will be spared from impending judgment, as God marks those who mourn over the sins of their nation. He reassures believers that even in times of great threat and infidelity, they can find peace in God's promise of protection and eventual deliverance. The sermon calls for introspection on whether one has this godly fear and sensitivity to divine warnings.