What is the New Covenant that Christ mediates?

Christ's mediation of the New Covenant is foundational to the Christian faith. Unlike the Old Covenant, which was based on the law and sacrifices that needed continual renewal, the New Covenant is established through Christ's perfect sacrifice. It promises eternal redemption and inheritance for believers, meaning they can rely on God's unchanging promise of salvation and eternal life. This covenant reflects the profound relationship God has with His people, made possible by Christ fulfilling the law and defeating sin and death.