Then Jesus answering said unto them, Go your way, and tell John what things ye have seen and heard; how that the blind see, the lame walk, the lepers are cleansed, the deaf hear, the dead are raised, to the poor the gospel is preached.

And he answered and said unto them, Go and tell John the things which ye have seen and heard; the blind receive their sight, the lame walk, the lepers are cleansed, and the deaf hear, the dead are raised up, the poor have good tidings preached to them.

And answering, he said to them: Go and relate to John what you have heard and seen: the blind see, the lame walk, the lepers are made clean, the deaf hear, the dead rise again, to the poor the gospel is preached:

And Jesus answering said to them, Go, bring back word to John of what ye have seen and heard: that blind see, lame walk, lepers are cleansed, deaf hear, dead are raised, poor are evangelized;

And he answered and said unto them, Go your way, and tell John what things ye have seen and heard; the blind receive their sight, the lame walk, the lepers are cleansed, and the deaf hear, the dead are raised up, the poor have good tidings preached to them.

Then Jesus answering, said to them, Go, and tell John what things ye have seen and heard; that the blind see, the lame walk, lepers are cleansed, the deaf hear, the dead are raised, to the poor the gospel is preached.

And Jesus answering said to them, 'Having gone on, report to John what ye saw and heard, that blind men do see again, lame do walk, lepers are cleansed, deaf do hear, dead are raised, poor have good news proclaimed;

Then He answered the messengers, "Go and report to John what you have seen and heard. Blind men receive sight, the lame walk, lepers are purified, deaf persons hear, the dead are raised to life, the poor have the Good News proclaimed to them.

And answering them he said, Go back and give news to John of what you have seen, and the things which have come to your ears; the blind now see, those who had no power in their legs are walking, lepers are made clean, those who had no hearing now have their ears open, dead men come to life again, and the poor have the good news given to them.

And responding, he said to them: "Go and report to John what you have heard and seen: that the blind see, the lame walk, the lepers are cleansed, the deaf hear, the dead rise again, the poor are evangelized.

So his answer to the question was, "Go and report to John what you have witnessed and heard – the blind recover their sight, the lame walk, the lepers are made clean, and the deaf hear, the dead are raised to life, the good news is told to the poor.

See these verses explained at large on Matthew 11:4-15 (note).

Then Jesus answering said unto them,.... "To the disciples", as the Persic; to both, as the Arabic: when he had wrought these cures, he turned himself to the disciples of John, and made answer to their question. The Vulgate Latin leaves out the word "Jesus", rendering it, "and he answering"; in the following words:
go your way, and tell John what things ye have seen and heard. They had just seen many cured of infirmities, plagues, and evil spirits, and they had heard the doctrines of the Gospel preached by him; and the former were in confirmation of the latter, and both were proofs of his being the Messiah: the particulars of which follow,
how that the blind see; that is, they that had been blind, and some that were born blind received their sight, which was what was never heard of before, from the beginning of the world; and which, as it is an instance of Christ's almighty power, showing him to be God; so it was a fulfilment of a prophecy concerning him as the Messiah, who, when he came, was to open the eyes of the blind, Isaiah 35:5 and this was true, not only in a corporeal, but in a spiritual sense: and generally so it was, that when the blind received their bodily sight, they also received their spiritual sight; and both were evidences of the true Messiahship of our Lord Jesus.
The lame walk; these were among those who were cured of their infirmities; and this also was prophesied of the Messiah, and was now accomplished by Jesus, that "the lame man" should "leap as an hart", Isaiah 35:6 and so was to be considered by John, and his disciples, as another proof of his being the true Messiah:
the lepers are cleansed; of this sort were they who were cured of their plagues: the leprosy was called a plague; hence the treatise of leprosy, in the Misna, is, by the Jews, called Negaim, or "plagues".
The deaf hear; so in the above prophecy in Isaiah, it is predicted, that "the ears of the deaf should be unstopped" in the days of the Messiah; and which therefore must be considered as a further confirmation of Jesus being he that was to come, and that another was not to be looked for.
The dead are raised: whether there were any raised at this time, or no, is not certain; but certain it is, that there had been one raised from the dead, if not in the presence of these disciples, yet just before they came to Christ, of which John had been informed by some of his disciples, if not these; and of which an account is given before in this chapter, and which is what none but the mighty God can do.
To the poor the Gospel is preached: it was preached both by the poor, the disciples of Christ, and to the poor, mean, base, and illiterate among the Jews; and also to the poor, meek, and lowly in heart, as was prophesied should be, by the Messiah, Isaiah 61:1 so that put all together, here were undoubted proofs, and a full demonstration, that Jesus was the Messiah; See Gill on Matthew 11:4. See Gill on Matthew 11:5.

To the poor the Gospel is preached - Which is the greatest mercy, and the greatest miracle of all.