What does the Bible say about the messenger of the covenant?

The term 'messenger of the covenant,' as prophesied in Malachi 3:1, refers to Jesus Christ, who fulfills the covenant of grace established by God. This covenant is not based on human merit but is God’s promise to save His people through Christ's sacrifice. In understanding this, we see that Christ is not only the messenger who announces God’s plan of salvation but is Himself the substance of that covenant. He embodies grace, revealing how God saves sinners, purifies them, and ultimately restores them to right relationship with Him.