John 6:30

6:30 So they said to him, “Then what miraculous sign will you perform, so that we may see it and believe you? What will you do?

Matthew 12:38-42

The Sign of Jonah

12:38 Then some of the experts in the law along with some Pharisees answered him, “Teacher, we want to see a sign from you.” 12:39 But he answered them, “An evil and adulterous generation asks for a sign, but no sign will be given to it except the sign of the prophet Jonah. 12:40 For just as Jonah was in the belly of the huge fish for three days and three nights, so the Son of Man will be in the heart of the earth for three days and three nights. 12:41 The people of Nineveh will stand up at the judgment with this generation and condemn it, because they repented when Jonah preached to them – and now, something greater than Jonah is here! 12:42 The queen of the South will rise up at the judgment with this generation and condemn it, because she came from the ends of the earth to hear the wisdom of Solomon – and now, something greater than Solomon is here!

Matthew 16:1-4

The Demand for a Sign

16:1 Now when the Pharisees and Sadducees came to test Jesus, they asked him to show them a sign from heaven. 16:2 He said, “When evening comes you say, ‘It will be fair weather, because the sky is red,’ 16:3 and in the morning, ‘It will be stormy today, because the sky is red and darkening.’ You know how to judge correctly the appearance of the sky, but you cannot evaluate the signs of the times. 16:4 A wicked and adulterous generation asks for a sign, but no sign will be given to it except the sign of Jonah.” Then he left them and went away.

Mark 8:11

The Demand for a Sign

8:11 Then the Pharisees came and began to argue with Jesus, asking for a sign from heaven to test him.

Luke 11:29

The Sign of Jonah

11:29 As the crowds were increasing, Jesus began to say, “This generation is a wicked generation; it looks for a sign, but no sign will be given to it except the sign of Jonah.