One Professor suggested that Matthew was incorrect, pointing out that it is to be noted that these are not the words of Jesus but the explanation of Matthew. When Luke reports the incident (Luke 11:29-32, he makes no mention at all of Jonah being in the belly of the whale. He simply says that Jesus said: 'For just as Jonah became a sign to the people of Nineveh, so the Son of Man will be to this generation' (Luke 11:30).