Lk 11, 29-38
The crowds got even bigger and he addressed them, ‘This is an evil generation; it is asking for a sign. The only sign it will be given is the sign of Jonah. For just as Jonah became a sign to the people of Nineveh, so will the Son of man be a sign to this generation. On Judgement Day the Queen of the South will stand up against the people of this generation and be their condemnation, because she came from the ends of the earth to hear the wisdom of Solomon; and, look, there is something greater than Solomon here.