Why is the blood of Christ significant in the New Covenant?

In the context of the New Covenant, Christ's blood is crucial because it serves as the ultimate sacrifice that satisfies God's justice. As Christ states in Matthew 26:28, His blood is 'shed for many for the remission of sins.' This sacrificial act fulfills the requirements of the law that humanity could not meet on their own. The New Covenant offers a promise of grace, allowing believers to be reconciled with God through faith in Christ, who is both the mediator and the surety of this covenant. Thus, His blood signifies not just atonement, but also the establishment of a new relationship with God based on grace rather than works.