How do we know Jesus is the mediator of the new covenant?

Jesus is described in Scripture as the mediator of the new covenant, a role that emphasizes His unique position between God and humanity. Hebrews 12:24 declares Him the mediator of the new covenant, signifying that through His life, death, and resurrection, He opens a way for believers to access God. This new covenant embodies grace, contrasting sharply with the old covenant of law that demanded perfection without providing the means to fulfill it. The fulfillment of the law through Jesus' life and His sacrificial death provides the foundation for our hope of salvation and reconciliation.