The Jews had hoped for centuries for a Messianic King to come and rescue them. They also had hopes for a suffering Servant of the Lord (prophesied by Isaiah), and they even had a vague expectation of a “son of man” who would appear at the end of the age (Daniel). What they never fathomed, though, was that all three of these figures would turn out to be the same man! No one ever pulled those three strands together–at least not until Jesus.
Jesus, however, not only declared himself to be the fulfillment of Israel’s messianic hopes (that is, the King), but also constantly referred to himself as the divine “Son of Man” from Daniel 7. Even more, Jesus said of the Son of Man that he came “to give his life as a ransom for many” (Mark 10:45), which points unmistakably to the suffering Servant of the Lord in Isaiah 53:10.
Do you see what Jesus was claiming? He was saying that he himself fulfilled–all at the same time–the roles of the Davidic Messiah, the Suffering Servant of Isaiah, and Daniel’s Son of Man! Jesus took the divine nature of the Son of Man, joined to it the substitutionary suffering of the Servant, and finally combined all that with his messianic role. By the time Jesus finished gathering together all the threads of Jewish hope, this King was infinitely more than the earthly revolutionary the Jews were hoping for. He was the divine Servant-King, who would suffer and die for his people to win their salvation, make them righteous in his Father’s eyes, and bring them gloriously into his kingdom. (p.94-95 “What Is the Gospel”)