The messengers

“So He replied to the messengers, ‘Go back and report to John what you have seen and heard: The blind receive sight, the lame walk, those who have leprosy are cured, the deaf hear, the dead are raised, and the good news is preached to the poor. Blessed is the man who does not fall away on account of Me.’” Luke 7:22-23
John the Baptist had been put in prison by Herod for speaking out against him taking his sister-in-law to be his wife. While he was there, he heard of what Jesus was doing and sent messengers to ask Him, “Are You the one who was to come, or should we expect someone else?” (Luke 7:19).
This shows that John had a lapse of faith while he was in prison. Like many others, he expected Jesus to overthrow the Romans and establish His kingdom there and then. He knew that Jesus was the Messiah (see John 1:34), but he is effectively asking Jesus, ‘When are You going to get the show on the road?’
The verses above are interesting. While John’s messengers were there, Jesus was doing all these things – giving sight to the blind, causing the lame to walk, healing those who had leprosy, making those who were deaf to hear, raising the dead, and preaching the good news to the poor. They saw Him do all these. Jesus tells them, “Go back and report to John what you have seen and heard.” The miracles are proof that Jesus has authority to preach the message He is preaching. Then Jesus gives a mild rebuke: “Blessed is the man who does not fall away on account of Me” – or, on account of what I am doing.
Jesus knew what He was doing. He wasn’t about to change His timetable to fit in with anyone else’s expectations.