Why is the concept of Christ's finished work important for Christians?

Understanding that Christ's redemptive work is finished is essential for Christians as it undergirds the doctrine of grace and assures us of our salvation. The declaration 'It is finished' (John 19:30) signifies that all the demands of the law have been met through His sacrifice. This is crucial for upholding the sovereignty of God, as it teaches that salvation is rooted in His purpose and grace rather than human effort or decision. It also fosters a deep sense of peace, knowing that the work required for our salvation has been accomplished outside of ourselves, ensuring that our standing before God is secure in Christ. By recognizing the completed work of Christ, believers can rest in the assurance that the salvation He provides is effective and complete.