How do we know that Christ's sacrifice is effective for our salvation?

The effectiveness of Christ's sacrifice for salvation can be traced back to a divine plan agreed upon by the Father, Son, and Holy Spirit before the foundation of the world, as indicated throughout Scriptures. Hebrews 9:22 states that without the shedding of blood, there is no remission. This underscores the necessity of Jesus' death for the forgiveness of sins. Christ's sacrificial death is not only prophesied in the Old Testament but also fulfilled through His life, passion, and resurrection.

Furthermore, the transformative power of the resurrection assures believers that Christ's sacrifice was accepted by God as a payment in full for sin. The believer's assurance of salvation rests upon faith in the gospel that proclaims Jesus Christ's victory over sin and death, which is the cornerstone of historic Reformed theology.