World War II revealed the devastating consequences of evil, but its greatest lesson isn't simply about history—it's about the human heart. As the world watched the horrors of the Holocaust unfold, Scripture reminds us that evil doesn't begin with one nation or one person; it begins in the sinful heart of every human being. Through the writings of Paul in Romans 9–11, we discover God's enduring faithfulness to His covenant with Israel while being reminded that both Jews and Gentiles stand in need of the same Savior, Jesus Christ. Christians are called to reject hatred, honor God's promises, remain humble, and love all people enough to point them to Christ. The greatest battle is not against flesh and blood but against the sinful heart within us. Through the cross and resurrection, Jesus offers the one thing history never could—a new heart transformed by God's grace.