Matthew 11:20

Then Jesus began to reproach. Compare Luke 10:12-15. The cities around the Lake of Galilee had received most of his attention, therefore they had the least excuse for not accepting him. It makes Jesus sad because the people did not turn from their sins (see Matthew 23:37-39). We know of many miracles in these cities: The Roman officer's servant, Peter's mother-in-law, two men with demons, a paralyzed man, the diseased woman, etc., were all healed. Jairus' daughter was raised from death. Of course, this was only a small part of the work which he did. The purpose of the gospel is to persuade people to turn from sin and live a new life!