Why is the doctrine of Christ's atonement important?

The doctrine of atonement is foundational to the Christian faith, signifying that through Christ's sacrificial death, believers are reconciled with God. His suffering and eventual death acted as the fulfillment of the law, bearing the curse we are all under because of sin. Galatians 3:13 emphasizes this, stating, ‘Christ has redeemed us from the curse of the law, being made a curse for us.’ Understanding this doctrine not only fortifies the believer's assurance of salvation, but also serves as the basis for living a life of gratitude and obedience to Christ.