"As the crowd increased, JESUS spoke the following words: 'People of the present time are troubled people. They ask for a sign, but no sign will be given to them except the sign of Jonah. As Jonah became a sign for the people of Nineveh, so will the Son of Man be a sign for this generation. The Queen of the South will rise up on Judgment Day with the people of these times and accuse them, for she came from the ends of the earth to hear the wisdom of Solomon; and here, there is greater than Solomon. The people of Nineveh will rise up on Judgment Day with the people of these times and accuse them, for Jonah's preaching made them turn from their sins, and here, there is greater than Jonah.'" - Luke 11:29-32
(The Ninevites, being sinners, received no other divine sign than the coming of Jonah, who invited them to repent. JESUS' contemporaries believe they are "good" because they belong to the people of GOD, and they do not realize that the hour has come for them to repent as well.
The people of Nineveh will rise up with these people and accuse them. JESUS again uses the traditional image of collective judgment where each one excuses himself by pointing out that others have done worse. This image retains a deep truth: all that GOD has given to each one of us should produce fruits for all humanity.)