Luke 11:29-30 New Living Translation (NLT)
The Sign of Jonah
29 As the crowd pressed in on Jesus, he said, “This evil generation keeps asking me to show them a miraculous sign. But the only sign I will give them is the sign of Jonah. 30 What happened to him was a sign to the people of Nineveh that God had sent him. What happens to the Son of Man will be a sign to these people that he was sent by God.
32 The people of Nineveh will also stand up against this generation on judgment day and condemn it, for they repented of their sins at the preaching of Jonah. Now someone greater than Jonah is here—but you refuse to repent.