How do we know Jesus Christ is the messenger of the covenant?

Jesus Christ is identified as the messenger of the covenant as highlighted in several key Scriptures. In Malachi 3:1, God declares He will send His messenger to prepare the way for the Lord. This prophecy directly points to Jesus as the fulfillment of that promise. In addition, Hebrews 1:1-3 reveals that God has spoken through His Son, who is the heir of all things and the brightness of His glory. Furthermore, Hebrews 13:20 describes Him as the God of peace who brought Jesus back from the dead through the blood of the everlasting covenant. These verses collectively argue that Christ is the divine messenger appointed to mediate God’s covenant of grace, reinforcing His essential role in the scope of salvation history.