How do we know that Christ's substitutionary death is true?

The truth of Christ's substitutionary death is underscored in John 11:49-50, where Caiaphas, despite his evil intent, proclaims that it is beneficial for one man to die for the people. This prophetic revelation aligns with the overarching narrative of Scripture that highlights God's plan for redemption through Christ's sacrifice. The Apostle John clarifies that Caiaphas spoke not only for the nation of Israel but also for God's elect, indicating that Christ's death was always intended to gather together the children of God scattered abroad. Thus, through the lens of sovereign grace, we recognize that God's providence ensured the fulfillment of His redemptive plan through Christ's substitutionary atonement.