What does the Bible say about Jesus Christ being the covenant?

Isaiah 42 reveals that God has given Jesus Christ as a 'covenant of the people' and a 'light of the Gentiles.' This indicates that Jesus is not just a figure of the covenant, but He embodies it. He is the one whom God delights in, the one who comes to fulfill the law and brings salvation to both Jews and Gentiles. The New Testament further clarifies this concept, showing that Jesus serves as the mediator of a new covenant, fulfilling all righteousness and providing access to the Father through His sacrifice.