The disciples of John told him about all these things. John summoned two of his disciples and sent them to the Lord to ask, "Are you the one who is to come, or should we look for another?" When the men came to him, they said, "John the Baptist has sent us to you to ask, 'Are you the one who is to come, or should we look for another?'" At that time he cured many of their diseases, sufferings, and evil spirits; he also granted sight to many who were blind. And he said to them in reply, "Go and tell John what you have seen and heard: the blind regain their sight, the lame walk, lepers are cleansed, the deaf hear, the dead are raised, the poor have the good news proclaimed to them. And blessed is the one who takes no offense at me." (Lk 7:18-23)
Probably there were many who pretended themselves to be the Messiah. People also were carried away by these who appear as leaders of the people. And this is the reason John the Baptist also asks Jesus whether he was one or should we look for another. John the Baptist is looking for credentials and he is looking for it from Jesus himself.
Jesus does not give any proof for his identity as the Messiah except his own activities. His actions speak for themselves. His activities are healing and giving sight to the blind and casting out demons. It is more of making the man complete and whole.
Jesus indirectly tells John the Baptist that the works of the Messiah is to make or help man to be totally human. Man when he was created by God he was totally human but because of his sin man lost his humanity and the effect of it is all what he suffered. The work of the Messiah is to make man a ‘new creation’.
