Then some of the Jewish leaders including the scribes and Pharisees said to him “Teacher, show us a sign.”

But he said “An evil generation demands a sign, but only the sign of the prophet Jonah will be given. In the same way that Jonah was in the belly of the whale for three days and three nights, the Son of Man will be in the heart of the earth for the same amount of time. In the same way that Jonah became a sign to the people of Nineveh, the Son of Man will be a sign to this generation. The men of Nineveh will stand up and condemn this generation at the Day of Judgment, because they repented when Jonah spoke to them, and something even greater than Jonah is here right now! The Queen of Sheba, the Queen of the south, will also rise up and condemn this generation at the Day of Judgment, because she traveled all the way from the ends of the earth to hear the wisdom of Solomon, and something even greater than Solomon is here right now!

MT 12:38-42, LK 11:29-32