How do we know the doctrine of Christ's redemption is true?

The doctrine of Christ's redemption is firmly grounded in scripture, which provides a consistent narrative of God's redemptive plan. The Old Testament prophets, particularly Isaiah, foretold the coming of a Messiah who would bear our sins, as seen in passages like Isaiah 53. This prophecy is fulfilled in the person of Jesus Christ, whose sacrificial death was in accordance with divine purpose as stated in Romans 8:32, confirming that He, being God’s own Son, did not spare His life for our salvation.