The generation Jesus spoke of consisted of the Jews to whom He offered the kingdom (cf. Matthew 11:20-24; Matthew 12:39; Matthew 12:41-42; Matthew 12:45; Matthew 16:4; Matthew 17:17; Matthew 23:36; Matthew 24:34). Jesus must have observed children playing the marriage and funeral games He referred to here, and He used them to illustrate the childish reaction of most of His adult contemporaries. The point was that the people found fault with whatever Jesus did. He did not behave or teach in harmony with what they wanted Him to do or expected that Messiah would do. His concept of the kingdom was different from theirs. They wanted a King who would fit into and agree with their traditional understanding of the Messiah. Consequently they rejected Him. [source][source][source]