How do we know that Christ's death accomplished redemption?

Christ's crucifixion is the apex of God's redemptive plan, where He bore the sins of His people. His death served a specific purpose: it was a vicarious and substitutionary sacrifice. As articulated in Scripture, Jesus, the just, died for the unjust, fulfilling the demands of divine justice while granting righteousness to those whom God has chosen. Romans 8:32 affirms that God spared not His Son, further evidencing His role as the one who accomplishes redemption. This illustrates the weighty theological truth that salvation is rooted in Christ's sacrifice alone, as He commended His spirit into the Father's hands, assuring us that the work of redemption was completed.