How do we know that Jesus is truly our substitute?

Our assurance that Jesus is our substitute stems from His prophetic fulfillment as outlined in Scripture, which declares Him to be the Lamb without blemish. His sinless life qualifies Him uniquely to bear the weight of our sins; as stated in Hebrews, He was 'tempted as we are, yet without sin.' Additionally, the cohesive narrative of the Bible, from the sacrificial system in the Old Testament to the fulfillment in Christ's atoning death, provides a clear picture of God's redemptive plan. The many testimonies of believers, the historical resurrection, and the transformative power of the gospel further affirm that He is indeed our substitute, bringing about our reconciliation with God.