Luke 7:21
And in that same hour he cured many of their infirmities and plagues, and of evil spirits; and unto many that were blind he gave sight. And in that same hour he cured many of their infirmities and plagues, and of evil spirits; and unto many that were blind he gave sight.
Luke 7:21 belongs to the time when John the Baptist, first in heralding Christ's kingdom, was first also in suffering as a prisoner shut in by the walls of a dungeon cell in the fortress of Herod Antipas, in territory east of Jordan under Antipas's dominion where much of John's ministry had been spent. Herod himself had listened to John's preaching, feared him knowing he was just and holy, did many things because of him, and heard him gladly, but John dealt with him faithfully in denouncing his iniquitous alliance with Herodias, his brother's wife. Herodias fastened Herod more firmly in her toils and in revenge induced Herod to cast John into prison.
While John was shut in gloom and inaction, week after week with no change brought despondency and doubt. His disciples still had access to him and told him Jesus was working miracles and the people were flocking to Him, while questioning why the Messiah did nothing to free His faithful herald from loss of liberty and perhaps of life. Even with those healings before him, John was perplexed and troubled because he did not understand the nature of Christ's kingdom. He expected Jesus to take the throne of David and claim kingly authority, to fill valleys and make low mountains and hills and cast down human pride and power, to thoroughly purge His floor with His fan in His hand, and like Elijah to reveal Himself by fire.
In that same hour Jesus healed many people of illness and affliction, drove out evil spirits, and gave sight to many who were blind. These mighty works were evidence of His Messiahship and divine identity, given through His actions to John's messengers to answer John's question about whether He was the coming one and to give him grounds for faith.