How do we know Christ is crucial to redemption?

Christ is crucial to redemption because it is through Him that the law is fulfilled and sins are paid for. Hebrews 9 emphasizes the perfection of Christ's sacrifice, which was necessary because no other offering could take away sins. In contrast to the Old Testament priests who had to sacrifice for their own sins before interceding for the people, Christ, being perfect, did not require such atonement for Himself. Thus, His unique position as the sinless Son of God enables Him to be our perfect Redeemer, ensuring that all who believe in Him are justified and cleansed from sin (1 Peter 2:24).