How do we know Jesus' crucifixion was for our redemption?

The crucifixion of Jesus was not a mere historical event but the culmination of God's eternal purpose for redemption. As stated in the sermon, this moment in John 19:19-22 is described as the day of redemption, where Jesus, the Lamb slain from the foundation of the world, laid down His life for His people. This act was predestined in God's everlasting covenant of grace, demonstrating His love and commitment to save the elect. Romans 8:28-30 further emphasizes that all things work together for good to those who are called according to His purpose, indicating that Christ's death is the foundational act of grace that brings about the salvation of those chosen by God.