How do we know that Christ is our Mediator in the covenant of grace?

Christ is affirmed as our Mediator in the covenant of grace through His sacrifice on the cross, where He poured out His blood to confirm the promises of God. The preacher highlights that the act of Christ's bloodshed at Calvary is essential, as it validates the covenant and secures our salvation. Hebrews 9:15 indicates that Christ is the Mediator of a new covenant, enabling those called to receive the promised eternal inheritance.

This mediatorial role is exclusive and vital for believers, as it underscores that salvation is obtained not through human effort but through Christ's finished work. His righteousness is imputed to the believer, ensuring that they stand justified before God. Therefore, the assurance of a believer's acceptance relies entirely on Christ's mediation, embodying the core of sovereign grace theology.