“He replied to them, “Go and report to John the things you have seen and heard: The blind receive their sight, the lame walk, those with skin diseases are healed, the deaf hear, the dead are raised, and the poor are told the good news.”
(Luke 7:22 HCSB)

Jesus’ words rhyme here in the Greek [Jesus and rap?] and he begins all of his statements with the particular malady which he has healed:

τυφλοὶ – Blind
χωλοὶ – Lame
λεπροὶ- Skin diseases
κωφοὶ – Deaf
νεκροὶ – Dead
πτωχοὶ – Poor

In essence Jesus said, “Do you see all the things that I am doing?  All the signs and miracles?  This is all you need to answer your question.”  This was radically at odds with even what John expected.  The New International Bible Commentary points out:

As Fitzmyer notes, “Jesus . . . carries no ax or winnowing–fan, cleans no eschatological threshing–floor, and burns no chaff. Instead, he cures, frees, resuscitates; he cares for the blind, cripples, lepers, deaf, and even the dead; and he preaches good news to the poor” (p. 664). John’s growing doubt had to do with his understanding of what the “last days” would bring for the righteous and unrighteous. For John it was to be a “day of vengeance” and house–cleaning. People like Herod and Pilate would have to go. Instead, while John languishes in prison, Jesus ministers to the poor and the sick. In essence, John’s own understanding of what God was expected to do through the return of Elijah or the appearance of the Messiah was quite similar to the understanding of the audience in the synagogue in Nazareth (Luke 4:24-29). John had called the people to repentance, to make the nation ready for the Lord to purge out the unrighteous and exalt the righteous.

As always, Jesus was in the business of upsetting the expectations of everyone, even John.