How do we know Jesus' death atoned for our sins?

The doctrine of atonement emphasizes that Jesus Christ's death serves as a substitution for the sins of His people, fulfilling the requirements of divine justice. Passages such as Isaiah 53 and Romans 5:8 clarify that Christ died for the ungodly, providing a clear basis for our faith in His redemptive work. Moreover, 1 Peter 2:24 asserts that He bore our sins in His body on the tree, affirming His sacrifice as sufficient for salvation. This truth is central to Reformed theology, which places emphasis on the finished work of Christ in securing our redemption.