Why is Christ called the second Adam?

Christ is often referred to as the second Adam because He fulfills what Adam failed to accomplish — perfect obedience and righteousness before God. In the sermon, Saul is depicted as an Adam-like figure who, due to his disobedience, loses the kingdom and ultimately his life. In contrast, David symbolizes Christ, as he embodies the new birth and the new creation. This parallel emphasizes the transformative power of Christ's life and death, showcasing that through Him, believers are made alive and righteous, superseding the fall of Adam (Romans 5:18-19).