Thomas of Villanova (1486-1555), an Augustinian friar and Archbishop of Valencia who was called the Beggar Bishop because of his care for the poor, comments:
The disciples approached Jesus, and in front of the crowd put to him the same question which the Jews had put to John. Everyone eagerly awaited his reply, for there had already been a rumor among the people that he might indeed be the Messiah. The Lord gave no immediate answer, but delayed a little, and in their presence worked wonderful, mighty miracles. Then he invited them, “Go and report to John what you have heard: The blind are receiving their sight, the lame are walking, lepers are cleansed, the deaf hear, the dead rise again, and the good news is proclaimed to the poor.”
He did not give an answer to them in so many words, but pointed to his deeds, as much as to say, “The works that I am doing are my witness. These are the works I am performing; judge for yourself whether I am the Messiah.” This was an admirable reply, for he not only claimed by means of his works that he was the Messiah; he also proved it.