How do we know the doctrine of substitution is true?

The doctrine of substitution is evidenced throughout the entirety of the Bible, validated by key passages such as Romans 5:8 and 2 Corinthians 5:21. These verses confirm that Christ's death was not just a historical event but the fulfillment of God's redemptive plan for humanity. The Old Testament rituals, sacrifices, and prophetic figures all prefigure this substitutionary work, reinforcing the continuity of God's message. Through the testimony of Scripture, believers can be assured that Jesus Christ fulfills the role of the sacrificial Lamb, providing a basis for our justification before God, thus affirming the truth of this essential doctrine.