Why is it necessary for Christ to be our mediator?

The necessity of Christ as our mediator is rooted in His role in the covenant of grace, where He intercedes on behalf of believers. Hebrews 9:15 states that He is the mediator of a new covenant, allowing us to access God through Him. His perfect life and sacrificial death appease God’s justice, enabling us to be viewed as righteous in God’s sight. Without this mediation, humanity would remain separated from God due to sin. Christ's unique position as both God and man qualifies Him as the perfect mediator, bridging the gap created by sin.