We cannot fully understand the New Testament without a proper knowledge of the Old Testament.  In his gospel account Mark rests his claim that Jesus is God by equating Yahweh the Deliverer in the Old Testament prophecies of Isaiah, Exodus, and Malachi with Jesus.  But Jesus’ rescue of captives would be greater.  His deliverance would complete the Old Testament prophecies. It would be a new exodus, which goes beyond rescue of the Hebrew people to a way out for all people from captivity to their sins.