Luke 11:29-30

29The crowd around Jesus was growing very large, so he began to speak to them. ‘The people that are alive today are very bad,’ he said. ‘They want God to show them something powerful. But God will not do this for them. They will only see the same powerful thing that God did for Jonah.

30Jonah showed God's power to the people who lived in Nineveh. They knew that God had sent him. In the same way the Son of Man will show God's power to the people that are living today. Then they will know that God has sent me.