Why is it important for Christians to believe in the fulfillment of God's promises?

For Christians, faith in God's fulfilled promises provides a foundation for hope and assurance. The account of God delivering Israel serves as an archetype for understanding how God fulfills His promises through Christ. It reflects His character as a covenant-keeping God, who actively seeks and saves His people. This assurance encourages believers to trust in Christ for their salvation, knowing that He has fully satisfied the demands of the law and secured their forgiveness. Moreover, it reminds us that our salvation is not based on our efforts but on God's sovereign grace, which assures us of His love and commitment to save.