<p>7:21 <i>In that hour he cured many of diseases and illnesses and evil spirits, and on many that were blind he bestowed sight</i>- Again we are being shown that the Lord's miracles were for a teaching purpose; in this case, to give a lesson to John's disciples and to John himself, proving beyond cavil that the Lord was Messiah, Son of God, and not simply a prophet. The Lord did heal from genuine feelings of compassion, as seen at Nain; and yet Luke seems to always stress that this was far from the only reason. Here His miracles were done in order to intentionally fulfilling prophecies in Isaiah, and then asking John to accept that (see on :22).</p>