How do we know Christ's mediatorial role is true?

The truth of Christ being the mediator is affirmed in several scriptural references. The prophetic anticipation of a mediator is rooted in the Old Testament, where Moses represented the people before God. Deuteronomy 18:15 speaks of a prophet like Moses, yet greater, pointing to Jesus. His life and work fulfill these prophecies as He mediates a new covenant established through His blood (Luke 22:20). Furthermore, the New Testament corroborates His role. Hebrews 3:1–3 compares Him favorably against Moses, establishing His authority and significance in God's redemptive plan. The consistency across both covenants demonstrates that He is uniquely qualified to act as our mediator, providing assurance to believers about His role in our relationship with God.